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Finding the Fourth Proportional to 8,440.71, 12,661.06 and 4,569.72

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Solution

The fourth proportional to 8,440.71, 12,661.06 and 4,569.72 is: 6,854.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,440.71 : 12,661.06 = 4,569.72 : x
  2. Step 2: Convert to fraction form
    8,440.71/12,661.06 = 4,569.72/x
  3. Step 3: Cross multiply
    8,440.71x = 12,661.06 × 4,569.72
  4. Step 4: Simplify right side
    8,440.71x = 57,857,499.10
  5. Step 5: Solve for x
    x = 57,857,499.10/8,440.71
  6. Step 6: Final answer
    x = 6,854.58

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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.