Home / 1,388.04-2,082.42-522.36

Finding the Fourth Proportional to 1,388.04, 2,082.42 and 522.36

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Solution

The fourth proportional to 1,388.04, 2,082.42 and 522.36 is: 783.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388.04 : 2,082.42 = 522.36 : x
  2. Step 2: Convert to fraction form
    1,388.04/2,082.42 = 522.36/x
  3. Step 3: Cross multiply
    1,388.04x = 2,082.42 × 522.36
  4. Step 4: Simplify right side
    1,388.04x = 1,087,772.91
  5. Step 5: Solve for x
    x = 1,087,772.91/1,388.04
  6. Step 6: Final answer
    x = 783.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.