Home / 1,332.16-1,838.38-772.95

Finding the Fourth Proportional to 1,332.16, 1,838.38 and 772.95

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Solution

The fourth proportional to 1,332.16, 1,838.38 and 772.95 is: 1,066.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.16 : 1,838.38 = 772.95 : x
  2. Step 2: Convert to fraction form
    1,332.16/1,838.38 = 772.95/x
  3. Step 3: Cross multiply
    1,332.16x = 1,838.38 × 772.95
  4. Step 4: Simplify right side
    1,332.16x = 1,420,983.68
  5. Step 5: Solve for x
    x = 1,420,983.68/1,332.16
  6. Step 6: Final answer
    x = 1,066.68

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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.