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Finding the Fourth Proportional to 9,124.65, 13,702.77 and 8,709.12

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Solution

The fourth proportional to 9,124.65, 13,702.77 and 8,709.12 is: 13,078.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,124.65 : 13,702.77 = 8,709.12 : x
  2. Step 2: Convert to fraction form
    9,124.65/13,702.77 = 8,709.12/x
  3. Step 3: Cross multiply
    9,124.65x = 13,702.77 × 8,709.12
  4. Step 4: Simplify right side
    9,124.65x = 119,339,068.26
  5. Step 5: Solve for x
    x = 119,339,068.26/9,124.65
  6. Step 6: Final answer
    x = 13,078.76

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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.