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Finding the Fourth Proportional to 7,397.74, 10,209.11 and 4,040.72

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Solution

The fourth proportional to 7,397.74, 10,209.11 and 4,040.72 is: 5,576.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,397.74 : 10,209.11 = 4,040.72 : x
  2. Step 2: Convert to fraction form
    7,397.74/10,209.11 = 4,040.72/x
  3. Step 3: Cross multiply
    7,397.74x = 10,209.11 × 4,040.72
  4. Step 4: Simplify right side
    7,397.74x = 41,252,083.71
  5. Step 5: Solve for x
    x = 41,252,083.71/7,397.74
  6. Step 6: Final answer
    x = 5,576.31

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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.