Home / 1,447.38-2,170.51-522.70

Finding the Fourth Proportional to 1,447.38, 2,170.51 and 522.70

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Solution

The fourth proportional to 1,447.38, 2,170.51 and 522.70 is: 783.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.38 : 2,170.51 = 522.70 : x
  2. Step 2: Convert to fraction form
    1,447.38/2,170.51 = 522.70/x
  3. Step 3: Cross multiply
    1,447.38x = 2,170.51 × 522.70
  4. Step 4: Simplify right side
    1,447.38x = 1,134,514.72
  5. Step 5: Solve for x
    x = 1,134,514.72/1,447.38
  6. Step 6: Final answer
    x = 783.84

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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.