Home / 8,929.12-13,393.72-2,689.16

Finding the Fourth Proportional to 8,929.12, 13,393.72 and 2,689.16

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Solution

The fourth proportional to 8,929.12, 13,393.72 and 2,689.16 is: 4,033.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,929.12 : 13,393.72 = 2,689.16 : x
  2. Step 2: Convert to fraction form
    8,929.12/13,393.72 = 2,689.16/x
  3. Step 3: Cross multiply
    8,929.12x = 13,393.72 × 2,689.16
  4. Step 4: Simplify right side
    8,929.12x = 36,017,856.08
  5. Step 5: Solve for x
    x = 36,017,856.08/8,929.12
  6. Step 6: Final answer
    x = 4,033.75

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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.