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Finding the Fourth Proportional to 1,400.36, 1,932.90 and 934.52

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Solution

The fourth proportional to 1,400.36, 1,932.90 and 934.52 is: 1,289.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.36 : 1,932.90 = 934.52 : x
  2. Step 2: Convert to fraction form
    1,400.36/1,932.90 = 934.52/x
  3. Step 3: Cross multiply
    1,400.36x = 1,932.90 × 934.52
  4. Step 4: Simplify right side
    1,400.36x = 1,806,333.71
  5. Step 5: Solve for x
    x = 1,806,333.71/1,400.36
  6. Step 6: Final answer
    x = 1,289.91

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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.