Home / 7,239.19-9,990.56-4,052.78

Finding the Fourth Proportional to 7,239.19, 9,990.56 and 4,052.78

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Solution

The fourth proportional to 7,239.19, 9,990.56 and 4,052.78 is: 5,593.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.19 : 9,990.56 = 4,052.78 : x
  2. Step 2: Convert to fraction form
    7,239.19/9,990.56 = 4,052.78/x
  3. Step 3: Cross multiply
    7,239.19x = 9,990.56 × 4,052.78
  4. Step 4: Simplify right side
    7,239.19x = 40,489,541.76
  5. Step 5: Solve for x
    x = 40,489,541.76/7,239.19
  6. Step 6: Final answer
    x = 5,593.10

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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.