Home / 2,449.99-3,381.08-1,387.81

Finding the Fourth Proportional to 2,449.99, 3,381.08 and 1,387.81

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Solution

The fourth proportional to 2,449.99, 3,381.08 and 1,387.81 is: 1,915.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,449.99 : 3,381.08 = 1,387.81 : x
  2. Step 2: Convert to fraction form
    2,449.99/3,381.08 = 1,387.81/x
  3. Step 3: Cross multiply
    2,449.99x = 3,381.08 × 1,387.81
  4. Step 4: Simplify right side
    2,449.99x = 4,692,279.57
  5. Step 5: Solve for x
    x = 4,692,279.57/2,449.99
  6. Step 6: Final answer
    x = 1,915.22

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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.