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Finding the Fourth Proportional to 8,715.52, 12,026.46 and 4,938.40

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Solution

The fourth proportional to 8,715.52, 12,026.46 and 4,938.40 is: 6,814.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.52 : 12,026.46 = 4,938.40 : x
  2. Step 2: Convert to fraction form
    8,715.52/12,026.46 = 4,938.40/x
  3. Step 3: Cross multiply
    8,715.52x = 12,026.46 × 4,938.40
  4. Step 4: Simplify right side
    8,715.52x = 59,391,470.06
  5. Step 5: Solve for x
    x = 59,391,470.06/8,715.52
  6. Step 6: Final answer
    x = 6,814.45

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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.