Home / 1,400.63-1,932.78-841.13

Finding the Fourth Proportional to 1,400.63, 1,932.78 and 841.13

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Solution

The fourth proportional to 1,400.63, 1,932.78 and 841.13 is: 1,160.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.63 : 1,932.78 = 841.13 : x
  2. Step 2: Convert to fraction form
    1,400.63/1,932.78 = 841.13/x
  3. Step 3: Cross multiply
    1,400.63x = 1,932.78 × 841.13
  4. Step 4: Simplify right side
    1,400.63x = 1,625,709.58
  5. Step 5: Solve for x
    x = 1,625,709.58/1,400.63
  6. Step 6: Final answer
    x = 1,160.70

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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.