Home / 7,342.20-10,132.28-3,985.07

Finding the Fourth Proportional to 7,342.20, 10,132.28 and 3,985.07

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Solution

The fourth proportional to 7,342.20, 10,132.28 and 3,985.07 is: 5,499.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,342.20 : 10,132.28 = 3,985.07 : x
  2. Step 2: Convert to fraction form
    7,342.20/10,132.28 = 3,985.07/x
  3. Step 3: Cross multiply
    7,342.20x = 10,132.28 × 3,985.07
  4. Step 4: Simplify right side
    7,342.20x = 40,377,845.06
  5. Step 5: Solve for x
    x = 40,377,845.06/7,342.20
  6. Step 6: Final answer
    x = 5,499.42

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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.