Home / 3,959.20-5,461.98-2,386.40

Finding the Fourth Proportional to 3,959.20, 5,461.98 and 2,386.40

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Solution

The fourth proportional to 3,959.20, 5,461.98 and 2,386.40 is: 3,292.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.20 : 5,461.98 = 2,386.40 : x
  2. Step 2: Convert to fraction form
    3,959.20/5,461.98 = 2,386.40/x
  3. Step 3: Cross multiply
    3,959.20x = 5,461.98 × 2,386.40
  4. Step 4: Simplify right side
    3,959.20x = 13,034,469.07
  5. Step 5: Solve for x
    x = 13,034,469.07/3,959.20
  6. Step 6: Final answer
    x = 3,292.20

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Similar ratio
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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.