Home / 1,445.24-2,167.09-520.29

Finding the Fourth Proportional to 1,445.24, 2,167.09 and 520.29

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Solution

The fourth proportional to 1,445.24, 2,167.09 and 520.29 is: 780.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.24 : 2,167.09 = 520.29 : x
  2. Step 2: Convert to fraction form
    1,445.24/2,167.09 = 520.29/x
  3. Step 3: Cross multiply
    1,445.24x = 2,167.09 × 520.29
  4. Step 4: Simplify right side
    1,445.24x = 1,127,513.96
  5. Step 5: Solve for x
    x = 1,127,513.96/1,445.24
  6. Step 6: Final answer
    x = 780.16

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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.