Home / 1,957.11-2,700.67-1,117.79

Finding the Fourth Proportional to 1,957.11, 2,700.67 and 1,117.79

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Solution

The fourth proportional to 1,957.11, 2,700.67 and 1,117.79 is: 1,542.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,957.11 : 2,700.67 = 1,117.79 : x
  2. Step 2: Convert to fraction form
    1,957.11/2,700.67 = 1,117.79/x
  3. Step 3: Cross multiply
    1,957.11x = 2,700.67 × 1,117.79
  4. Step 4: Simplify right side
    1,957.11x = 3,018,781.92
  5. Step 5: Solve for x
    x = 3,018,781.92/1,957.11
  6. Step 6: Final answer
    x = 1,542.47

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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.