Home / 2,649.29-3,980.13-2,499.68

Finding the Fourth Proportional to 2,649.29, 3,980.13 and 2,499.68

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Solution

The fourth proportional to 2,649.29, 3,980.13 and 2,499.68 is: 3,755.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,649.29 : 3,980.13 = 2,499.68 : x
  2. Step 2: Convert to fraction form
    2,649.29/3,980.13 = 2,499.68/x
  3. Step 3: Cross multiply
    2,649.29x = 3,980.13 × 2,499.68
  4. Step 4: Simplify right side
    2,649.29x = 9,949,031.46
  5. Step 5: Solve for x
    x = 9,949,031.46/2,649.29
  6. Step 6: Final answer
    x = 3,755.36

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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.