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Finding the Fourth Proportional to 7,486.60, 10,331.03 and 4,129.44

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Solution

The fourth proportional to 7,486.60, 10,331.03 and 4,129.44 is: 5,698.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.60 : 10,331.03 = 4,129.44 : x
  2. Step 2: Convert to fraction form
    7,486.60/10,331.03 = 4,129.44/x
  3. Step 3: Cross multiply
    7,486.60x = 10,331.03 × 4,129.44
  4. Step 4: Simplify right side
    7,486.60x = 42,661,368.52
  5. Step 5: Solve for x
    x = 42,661,368.52/7,486.60
  6. Step 6: Final answer
    x = 5,698.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.