Home / 8,178.52-11,275.02-5,521.72

Finding the Fourth Proportional to 8,178.52, 11,275.02 and 5,521.72

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Solution

The fourth proportional to 8,178.52, 11,275.02 and 5,521.72 is: 7,612.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.52 : 11,275.02 = 5,521.72 : x
  2. Step 2: Convert to fraction form
    8,178.52/11,275.02 = 5,521.72/x
  3. Step 3: Cross multiply
    8,178.52x = 11,275.02 × 5,521.72
  4. Step 4: Simplify right side
    8,178.52x = 62,257,503.43
  5. Step 5: Solve for x
    x = 62,257,503.43/8,178.52
  6. Step 6: Final answer
    x = 7,612.32

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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.