Home / 1,449.61-2,001.21-1,117.30

Finding the Fourth Proportional to 1,449.61, 2,001.21 and 1,117.30

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Solution

The fourth proportional to 1,449.61, 2,001.21 and 1,117.30 is: 1,542.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.61 : 2,001.21 = 1,117.30 : x
  2. Step 2: Convert to fraction form
    1,449.61/2,001.21 = 1,117.30/x
  3. Step 3: Cross multiply
    1,449.61x = 2,001.21 × 1,117.30
  4. Step 4: Simplify right side
    1,449.61x = 2,235,941.93
  5. Step 5: Solve for x
    x = 2,235,941.93/1,449.61
  6. Step 6: Final answer
    x = 1,542.45

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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.