Home / 8,129.95-11,219.25-4,772.17

Finding the Fourth Proportional to 8,129.95, 11,219.25 and 4,772.17

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Solution

The fourth proportional to 8,129.95, 11,219.25 and 4,772.17 is: 6,585.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.95 : 11,219.25 = 4,772.17 : x
  2. Step 2: Convert to fraction form
    8,129.95/11,219.25 = 4,772.17/x
  3. Step 3: Cross multiply
    8,129.95x = 11,219.25 × 4,772.17
  4. Step 4: Simplify right side
    8,129.95x = 53,540,168.27
  5. Step 5: Solve for x
    x = 53,540,168.27/8,129.95
  6. Step 6: Final answer
    x = 6,585.55

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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.