Home / 8,931.25-12,327.56-6,136.75

Finding the Fourth Proportional to 8,931.25, 12,327.56 and 6,136.75

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Solution

The fourth proportional to 8,931.25, 12,327.56 and 6,136.75 is: 8,470.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.25 : 12,327.56 = 6,136.75 : x
  2. Step 2: Convert to fraction form
    8,931.25/12,327.56 = 6,136.75/x
  3. Step 3: Cross multiply
    8,931.25x = 12,327.56 × 6,136.75
  4. Step 4: Simplify right side
    8,931.25x = 75,651,153.83
  5. Step 5: Solve for x
    x = 75,651,153.83/8,931.25
  6. Step 6: Final answer
    x = 8,470.39

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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.