Home / 1,580.11-2,179.99-950.15

Finding the Fourth Proportional to 1,580.11, 2,179.99 and 950.15

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Solution

The fourth proportional to 1,580.11, 2,179.99 and 950.15 is: 1,310.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.11 : 2,179.99 = 950.15 : x
  2. Step 2: Convert to fraction form
    1,580.11/2,179.99 = 950.15/x
  3. Step 3: Cross multiply
    1,580.11x = 2,179.99 × 950.15
  4. Step 4: Simplify right side
    1,580.11x = 2,071,319.81
  5. Step 5: Solve for x
    x = 2,071,319.81/1,580.11
  6. Step 6: Final answer
    x = 1,310.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.