Home / 2,649.38-3,656.10-1,470.40

Finding the Fourth Proportional to 2,649.38, 3,656.10 and 1,470.40

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Solution

The fourth proportional to 2,649.38, 3,656.10 and 1,470.40 is: 2,029.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,649.38 : 3,656.10 = 1,470.40 : x
  2. Step 2: Convert to fraction form
    2,649.38/3,656.10 = 1,470.40/x
  3. Step 3: Cross multiply
    2,649.38x = 3,656.10 × 1,470.40
  4. Step 4: Simplify right side
    2,649.38x = 5,375,929.44
  5. Step 5: Solve for x
    x = 5,375,929.44/2,649.38
  6. Step 6: Final answer
    x = 2,029.13

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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.