Home / 8,918.26-12,305.50-5,732.13

Finding the Fourth Proportional to 8,918.26, 12,305.50 and 5,732.13

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Solution

The fourth proportional to 8,918.26, 12,305.50 and 5,732.13 is: 7,909.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.26 : 12,305.50 = 5,732.13 : x
  2. Step 2: Convert to fraction form
    8,918.26/12,305.50 = 5,732.13/x
  3. Step 3: Cross multiply
    8,918.26x = 12,305.50 × 5,732.13
  4. Step 4: Simplify right side
    8,918.26x = 70,536,725.72
  5. Step 5: Solve for x
    x = 70,536,725.72/8,918.26
  6. Step 6: Final answer
    x = 7,909.25

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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.