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Finding the Fourth Proportional to 7,669.92, 11,502.65 and 2,988.89

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Solution

The fourth proportional to 7,669.92, 11,502.65 and 2,988.89 is: 4,482.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,669.92 : 11,502.65 = 2,988.89 : x
  2. Step 2: Convert to fraction form
    7,669.92/11,502.65 = 2,988.89/x
  3. Step 3: Cross multiply
    7,669.92x = 11,502.65 × 2,988.89
  4. Step 4: Simplify right side
    7,669.92x = 34,380,105.52
  5. Step 5: Solve for x
    x = 34,380,105.52/7,669.92
  6. Step 6: Final answer
    x = 4,482.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.