Home / 3,877.13-5,815.69-1,280.27

Finding the Fourth Proportional to 3,877.13, 5,815.69 and 1,280.27

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Solution

The fourth proportional to 3,877.13, 5,815.69 and 1,280.27 is: 1,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.13 : 5,815.69 = 1,280.27 : x
  2. Step 2: Convert to fraction form
    3,877.13/5,815.69 = 1,280.27/x
  3. Step 3: Cross multiply
    3,877.13x = 5,815.69 × 1,280.27
  4. Step 4: Simplify right side
    3,877.13x = 7,445,621.16
  5. Step 5: Solve for x
    x = 7,445,621.16/3,877.13
  6. Step 6: Final answer
    x = 1,920.40

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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.