Home / 1,820.80-2,731.46-587.80

Finding the Fourth Proportional to 1,820.80, 2,731.46 and 587.80

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Solution

The fourth proportional to 1,820.80, 2,731.46 and 587.80 is: 881.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.80 : 2,731.46 = 587.80 : x
  2. Step 2: Convert to fraction form
    1,820.80/2,731.46 = 587.80/x
  3. Step 3: Cross multiply
    1,820.80x = 2,731.46 × 587.80
  4. Step 4: Simplify right side
    1,820.80x = 1,605,552.19
  5. Step 5: Solve for x
    x = 1,605,552.19/1,820.80
  6. Step 6: Final answer
    x = 881.78

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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.