Home / 1,622.30-2,433.78-929.30

Finding the Fourth Proportional to 1,622.30, 2,433.78 and 929.30

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Solution

The fourth proportional to 1,622.30, 2,433.78 and 929.30 is: 1,394.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.30 : 2,433.78 = 929.30 : x
  2. Step 2: Convert to fraction form
    1,622.30/2,433.78 = 929.30/x
  3. Step 3: Cross multiply
    1,622.30x = 2,433.78 × 929.30
  4. Step 4: Simplify right side
    1,622.30x = 2,261,711.75
  5. Step 5: Solve for x
    x = 2,261,711.75/1,622.30
  6. Step 6: Final answer
    x = 1,394.14

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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.