Home / 1,761.04-2,641.55-720.83

Finding the Fourth Proportional to 1,761.04, 2,641.55 and 720.83

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Solution

The fourth proportional to 1,761.04, 2,641.55 and 720.83 is: 1,081.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.04 : 2,641.55 = 720.83 : x
  2. Step 2: Convert to fraction form
    1,761.04/2,641.55 = 720.83/x
  3. Step 3: Cross multiply
    1,761.04x = 2,641.55 × 720.83
  4. Step 4: Simplify right side
    1,761.04x = 1,904,111.49
  5. Step 5: Solve for x
    x = 1,904,111.49/1,761.04
  6. Step 6: Final answer
    x = 1,081.24

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1.5x scale

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.