Home / 1,507.20-2,079.93-844.05

Finding the Fourth Proportional to 1,507.20, 2,079.93 and 844.05

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Solution

The fourth proportional to 1,507.20, 2,079.93 and 844.05 is: 1,164.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.20 : 2,079.93 = 844.05 : x
  2. Step 2: Convert to fraction form
    1,507.20/2,079.93 = 844.05/x
  3. Step 3: Cross multiply
    1,507.20x = 2,079.93 × 844.05
  4. Step 4: Simplify right side
    1,507.20x = 1,755,564.92
  5. Step 5: Solve for x
    x = 1,755,564.92/1,507.20
  6. Step 6: Final answer
    x = 1,164.79

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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.