Home / 8,411.20-11,614.80-5,272.80

Finding the Fourth Proportional to 8,411.20, 11,614.80 and 5,272.80

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Solution

The fourth proportional to 8,411.20, 11,614.80 and 5,272.80 is: 7,281.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,411.20 : 11,614.80 = 5,272.80 : x
  2. Step 2: Convert to fraction form
    8,411.20/11,614.80 = 5,272.80/x
  3. Step 3: Cross multiply
    8,411.20x = 11,614.80 × 5,272.80
  4. Step 4: Simplify right side
    8,411.20x = 61,242,517.44
  5. Step 5: Solve for x
    x = 61,242,517.44/8,411.20
  6. Step 6: Final answer
    x = 7,281.07

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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.