Home / 9,132.75-12,603.20-5,406.75

Finding the Fourth Proportional to 9,132.75, 12,603.20 and 5,406.75

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Solution

The fourth proportional to 9,132.75, 12,603.20 and 5,406.75 is: 7,461.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,132.75 : 12,603.20 = 5,406.75 : x
  2. Step 2: Convert to fraction form
    9,132.75/12,603.20 = 5,406.75/x
  3. Step 3: Cross multiply
    9,132.75x = 12,603.20 × 5,406.75
  4. Step 4: Simplify right side
    9,132.75x = 68,142,324.57
  5. Step 5: Solve for x
    x = 68,142,324.57/9,132.75
  6. Step 6: Final answer
    x = 7,461.32

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Half scale
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Double scale
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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.