Home / 8,178.91-11,275.56-5,522.11

Finding the Fourth Proportional to 8,178.91, 11,275.56 and 5,522.11

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Solution

The fourth proportional to 8,178.91, 11,275.56 and 5,522.11 is: 7,612.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.91 : 11,275.56 = 5,522.11 : x
  2. Step 2: Convert to fraction form
    8,178.91/11,275.56 = 5,522.11/x
  3. Step 3: Cross multiply
    8,178.91x = 11,275.56 × 5,522.11
  4. Step 4: Simplify right side
    8,178.91x = 62,264,882.63
  5. Step 5: Solve for x
    x = 62,264,882.63/8,178.91
  6. Step 6: Final answer
    x = 7,612.86

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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.