Home / 8,155.20-11,254.02-4,429.20

Finding the Fourth Proportional to 8,155.20, 11,254.02 and 4,429.20

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Solution

The fourth proportional to 8,155.20, 11,254.02 and 4,429.20 is: 6,112.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.20 : 11,254.02 = 4,429.20 : x
  2. Step 2: Convert to fraction form
    8,155.20/11,254.02 = 4,429.20/x
  3. Step 3: Cross multiply
    8,155.20x = 11,254.02 × 4,429.20
  4. Step 4: Simplify right side
    8,155.20x = 49,846,305.38
  5. Step 5: Solve for x
    x = 49,846,305.38/8,155.20
  6. Step 6: Final answer
    x = 6,112.21

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Half scale
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Double scale
Find fourth proportional to 8,156.20, 11,255.40 and 4,430.20
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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.