Home / 8,461.20-11,672.31-5,479.59

Finding the Fourth Proportional to 8,461.20, 11,672.31 and 5,479.59

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Solution

The fourth proportional to 8,461.20, 11,672.31 and 5,479.59 is: 7,559.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,461.20 : 11,672.31 = 5,479.59 : x
  2. Step 2: Convert to fraction form
    8,461.20/11,672.31 = 5,479.59/x
  3. Step 3: Cross multiply
    8,461.20x = 11,672.31 × 5,479.59
  4. Step 4: Simplify right side
    8,461.20x = 63,959,473.15
  5. Step 5: Solve for x
    x = 63,959,473.15/8,461.20
  6. Step 6: Final answer
    x = 7,559.15

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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.