Home / 8,918.25-12,304.42-5,140.93

Finding the Fourth Proportional to 8,918.25, 12,304.42 and 5,140.93

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Solution

The fourth proportional to 8,918.25, 12,304.42 and 5,140.93 is: 7,092.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.25 : 12,304.42 = 5,140.93 : x
  2. Step 2: Convert to fraction form
    8,918.25/12,304.42 = 5,140.93/x
  3. Step 3: Cross multiply
    8,918.25x = 12,304.42 × 5,140.93
  4. Step 4: Simplify right side
    8,918.25x = 63,256,165.90
  5. Step 5: Solve for x
    x = 63,256,165.90/8,918.25
  6. Step 6: Final answer
    x = 7,092.89

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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.