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Finding the Fourth Proportional to 8,700.40, 12,007.40 and 4,924.18

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Solution

The fourth proportional to 8,700.40, 12,007.40 and 4,924.18 is: 6,795.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.40 : 12,007.40 = 4,924.18 : x
  2. Step 2: Convert to fraction form
    8,700.40/12,007.40 = 4,924.18/x
  3. Step 3: Cross multiply
    8,700.40x = 12,007.40 × 4,924.18
  4. Step 4: Simplify right side
    8,700.40x = 59,126,598.93
  5. Step 5: Solve for x
    x = 59,126,598.93/8,700.40
  6. Step 6: Final answer
    x = 6,795.85

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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.