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Finding the Fourth Proportional to 8,700.43, 12,007.18 and 4,923.59

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Solution

The fourth proportional to 8,700.43, 12,007.18 and 4,923.59 is: 6,794.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.43 : 12,007.18 = 4,923.59 : x
  2. Step 2: Convert to fraction form
    8,700.43/12,007.18 = 4,923.59/x
  3. Step 3: Cross multiply
    8,700.43x = 12,007.18 × 4,923.59
  4. Step 4: Simplify right side
    8,700.43x = 59,118,431.38
  5. Step 5: Solve for x
    x = 59,118,431.38/8,700.43
  6. Step 6: Final answer
    x = 6,794.89

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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.