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Finding the Fourth Proportional to 10,235.40, 15,352.40 and 3,994.25

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Solution

The fourth proportional to 10,235.40, 15,352.40 and 3,994.25 is: 5,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,235.40 : 15,352.40 = 3,994.25 : x
  2. Step 2: Convert to fraction form
    10,235.40/15,352.40 = 3,994.25/x
  3. Step 3: Cross multiply
    10,235.40x = 15,352.40 × 3,994.25
  4. Step 4: Simplify right side
    10,235.40x = 61,321,256.92
  5. Step 5: Solve for x
    x = 61,321,256.92/10,235.40
  6. Step 6: Final answer
    x = 5,991.10

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.