Home / 1,178.28-1,625.12-824.10

Finding the Fourth Proportional to 1,178.28, 1,625.12 and 824.10

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Solution

The fourth proportional to 1,178.28, 1,625.12 and 824.10 is: 1,136.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.28 : 1,625.12 = 824.10 : x
  2. Step 2: Convert to fraction form
    1,178.28/1,625.12 = 824.10/x
  3. Step 3: Cross multiply
    1,178.28x = 1,625.12 × 824.10
  4. Step 4: Simplify right side
    1,178.28x = 1,339,261.39
  5. Step 5: Solve for x
    x = 1,339,261.39/1,178.28
  6. Step 6: Final answer
    x = 1,136.62

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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.