Home / 7,712.09-11,513.34-7,438.71

Finding the Fourth Proportional to 7,712.09, 11,513.34 and 7,438.71

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Solution

The fourth proportional to 7,712.09, 11,513.34 and 7,438.71 is: 11,105.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712.09 : 11,513.34 = 7,438.71 : x
  2. Step 2: Convert to fraction form
    7,712.09/11,513.34 = 7,438.71/x
  3. Step 3: Cross multiply
    7,712.09x = 11,513.34 × 7,438.71
  4. Step 4: Simplify right side
    7,712.09x = 85,644,397.39
  5. Step 5: Solve for x
    x = 85,644,397.39/7,712.09
  6. Step 6: Final answer
    x = 11,105.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.