Home / 8,900.20-12,282.40-4,921.32

Finding the Fourth Proportional to 8,900.20, 12,282.40 and 4,921.32

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Solution

The fourth proportional to 8,900.20, 12,282.40 and 4,921.32 is: 6,791.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,900.20 : 12,282.40 = 4,921.32 : x
  2. Step 2: Convert to fraction form
    8,900.20/12,282.40 = 4,921.32/x
  3. Step 3: Cross multiply
    8,900.20x = 12,282.40 × 4,921.32
  4. Step 4: Simplify right side
    8,900.20x = 60,445,620.77
  5. Step 5: Solve for x
    x = 60,445,620.77/8,900.20
  6. Step 6: Final answer
    x = 6,791.49

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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.