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Finding the Fourth Proportional to 7,655.76, 11,552.55 and 7,381.17

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Solution

The fourth proportional to 7,655.76, 11,552.55 and 7,381.17 is: 11,138.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,655.76 : 11,552.55 = 7,381.17 : x
  2. Step 2: Convert to fraction form
    7,655.76/11,552.55 = 7,381.17/x
  3. Step 3: Cross multiply
    7,655.76x = 11,552.55 × 7,381.17
  4. Step 4: Simplify right side
    7,655.76x = 85,271,335.48
  5. Step 5: Solve for x
    x = 85,271,335.48/7,655.76
  6. Step 6: Final answer
    x = 11,138.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.