Home / 1,789.68-2,470.40-1,117.18

Finding the Fourth Proportional to 1,789.68, 2,470.40 and 1,117.18

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Solution

The fourth proportional to 1,789.68, 2,470.40 and 1,117.18 is: 1,542.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.68 : 2,470.40 = 1,117.18 : x
  2. Step 2: Convert to fraction form
    1,789.68/2,470.40 = 1,117.18/x
  3. Step 3: Cross multiply
    1,789.68x = 2,470.40 × 1,117.18
  4. Step 4: Simplify right side
    1,789.68x = 2,759,881.47
  5. Step 5: Solve for x
    x = 2,759,881.47/1,789.68
  6. Step 6: Final answer
    x = 1,542.11

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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.