Home / 8,537.81-12,781.80-5,240.90

Finding the Fourth Proportional to 8,537.81, 12,781.80 and 5,240.90

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Solution

The fourth proportional to 8,537.81, 12,781.80 and 5,240.90 is: 7,846.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,537.81 : 12,781.80 = 5,240.90 : x
  2. Step 2: Convert to fraction form
    8,537.81/12,781.80 = 5,240.90/x
  3. Step 3: Cross multiply
    8,537.81x = 12,781.80 × 5,240.90
  4. Step 4: Simplify right side
    8,537.81x = 66,988,167.57
  5. Step 5: Solve for x
    x = 66,988,167.57/8,537.81
  6. Step 6: Final answer
    x = 7,846.06

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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.