Home / 9,155.60-12,635.88-5,429.84

Finding the Fourth Proportional to 9,155.60, 12,635.88 and 5,429.84

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Solution

The fourth proportional to 9,155.60, 12,635.88 and 5,429.84 is: 7,493.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,155.60 : 12,635.88 = 5,429.84 : x
  2. Step 2: Convert to fraction form
    9,155.60/12,635.88 = 5,429.84/x
  3. Step 3: Cross multiply
    9,155.60x = 12,635.88 × 5,429.84
  4. Step 4: Simplify right side
    9,155.60x = 68,610,806.66
  5. Step 5: Solve for x
    x = 68,610,806.66/9,155.60
  6. Step 6: Final answer
    x = 7,493.86

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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.