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Finding the Fourth Proportional to 5,351.20, 7,477.10 and 5,351.20

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Solution

The fourth proportional to 5,351.20, 7,477.10 and 5,351.20 is: 7,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,351.20 : 7,477.10 = 5,351.20 : x
  2. Step 2: Convert to fraction form
    5,351.20/7,477.10 = 5,351.20/x
  3. Step 3: Cross multiply
    5,351.20x = 7,477.10 × 5,351.20
  4. Step 4: Simplify right side
    5,351.20x = 40,011,457.52
  5. Step 5: Solve for x
    x = 40,011,457.52/5,351.20
  6. Step 6: Final answer
    x = 7,477.10

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Half scale
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Double scale
Find fourth proportional to 5,352.20, 7,478.50 and 5,352.20
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.