Home / 1,480.68-2,042.40-1,038.42

Finding the Fourth Proportional to 1,480.68, 2,042.40 and 1,038.42

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Solution

The fourth proportional to 1,480.68, 2,042.40 and 1,038.42 is: 1,432.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.68 : 2,042.40 = 1,038.42 : x
  2. Step 2: Convert to fraction form
    1,480.68/2,042.40 = 1,038.42/x
  3. Step 3: Cross multiply
    1,480.68x = 2,042.40 × 1,038.42
  4. Step 4: Simplify right side
    1,480.68x = 2,120,869.01
  5. Step 5: Solve for x
    x = 2,120,869.01/1,480.68
  6. Step 6: Final answer
    x = 1,432.36

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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.