Home / 8,187.30-12,280.95-5,076.90

Finding the Fourth Proportional to 8,187.30, 12,280.95 and 5,076.90

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Solution

The fourth proportional to 8,187.30, 12,280.95 and 5,076.90 is: 7,615.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.30 : 12,280.95 = 5,076.90 : x
  2. Step 2: Convert to fraction form
    8,187.30/12,280.95 = 5,076.90/x
  3. Step 3: Cross multiply
    8,187.30x = 12,280.95 × 5,076.90
  4. Step 4: Simplify right side
    8,187.30x = 62,349,155.06
  5. Step 5: Solve for x
    x = 62,349,155.06/8,187.30
  6. Step 6: Final answer
    x = 7,615.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.