Home / 8,901.12-12,282.88-4,921.60

Finding the Fourth Proportional to 8,901.12, 12,282.88 and 4,921.60

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Solution

The fourth proportional to 8,901.12, 12,282.88 and 4,921.60 is: 6,791.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.12 : 12,282.88 = 4,921.60 : x
  2. Step 2: Convert to fraction form
    8,901.12/12,282.88 = 4,921.60/x
  3. Step 3: Cross multiply
    8,901.12x = 12,282.88 × 4,921.60
  4. Step 4: Simplify right side
    8,901.12x = 60,451,422.21
  5. Step 5: Solve for x
    x = 60,451,422.21/8,901.12
  6. Step 6: Final answer
    x = 6,791.44

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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.