Home / 9,163.60-12,648.52-5,439.76

Finding the Fourth Proportional to 9,163.60, 12,648.52 and 5,439.76

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Solution

The fourth proportional to 9,163.60, 12,648.52 and 5,439.76 is: 7,508.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,163.60 : 12,648.52 = 5,439.76 : x
  2. Step 2: Convert to fraction form
    9,163.60/12,648.52 = 5,439.76/x
  3. Step 3: Cross multiply
    9,163.60x = 12,648.52 × 5,439.76
  4. Step 4: Simplify right side
    9,163.60x = 68,804,913.16
  5. Step 5: Solve for x
    x = 68,804,913.16/9,163.60
  6. Step 6: Final answer
    x = 7,508.50

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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.