Home / 1,431.38-2,147.34-565.58

Finding the Fourth Proportional to 1,431.38, 2,147.34 and 565.58

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Solution

The fourth proportional to 1,431.38, 2,147.34 and 565.58 is: 848.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.38 : 2,147.34 = 565.58 : x
  2. Step 2: Convert to fraction form
    1,431.38/2,147.34 = 565.58/x
  3. Step 3: Cross multiply
    1,431.38x = 2,147.34 × 565.58
  4. Step 4: Simplify right side
    1,431.38x = 1,214,492.56
  5. Step 5: Solve for x
    x = 1,214,492.56/1,431.38
  6. Step 6: Final answer
    x = 848.48

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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.