Home / 3,109.13-4,663.70-1,057.13

Finding the Fourth Proportional to 3,109.13, 4,663.70 and 1,057.13

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Solution

The fourth proportional to 3,109.13, 4,663.70 and 1,057.13 is: 1,585.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.13 : 4,663.70 = 1,057.13 : x
  2. Step 2: Convert to fraction form
    3,109.13/4,663.70 = 1,057.13/x
  3. Step 3: Cross multiply
    3,109.13x = 4,663.70 × 1,057.13
  4. Step 4: Simplify right side
    3,109.13x = 4,930,137.18
  5. Step 5: Solve for x
    x = 4,930,137.18/3,109.13
  6. Step 6: Final answer
    x = 1,585.70

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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.