Home / 1,489.19-2,053.85-1,117.00

Finding the Fourth Proportional to 1,489.19, 2,053.85 and 1,117.00

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Solution

The fourth proportional to 1,489.19, 2,053.85 and 1,117.00 is: 1,540.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.19 : 2,053.85 = 1,117.00 : x
  2. Step 2: Convert to fraction form
    1,489.19/2,053.85 = 1,117.00/x
  3. Step 3: Cross multiply
    1,489.19x = 2,053.85 × 1,117.00
  4. Step 4: Simplify right side
    1,489.19x = 2,294,135.88
  5. Step 5: Solve for x
    x = 2,294,135.88/1,489.19
  6. Step 6: Final answer
    x = 1,540.53

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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.