Home / 1,501.32-2,249.90-721.02

Finding the Fourth Proportional to 1,501.32, 2,249.90 and 721.02

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Solution

The fourth proportional to 1,501.32, 2,249.90 and 721.02 is: 1,080.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,501.32 : 2,249.90 = 721.02 : x
  2. Step 2: Convert to fraction form
    1,501.32/2,249.90 = 721.02/x
  3. Step 3: Cross multiply
    1,501.32x = 2,249.90 × 721.02
  4. Step 4: Simplify right side
    1,501.32x = 1,622,222.90
  5. Step 5: Solve for x
    x = 1,622,222.90/1,501.32
  6. Step 6: Final answer
    x = 1,080.53

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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.