Home / 1,820.56-2,731.28-710.04

Finding the Fourth Proportional to 1,820.56, 2,731.28 and 710.04

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Solution

The fourth proportional to 1,820.56, 2,731.28 and 710.04 is: 1,065.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.56 : 2,731.28 = 710.04 : x
  2. Step 2: Convert to fraction form
    1,820.56/2,731.28 = 710.04/x
  3. Step 3: Cross multiply
    1,820.56x = 2,731.28 × 710.04
  4. Step 4: Simplify right side
    1,820.56x = 1,939,318.05
  5. Step 5: Solve for x
    x = 1,939,318.05/1,820.56
  6. Step 6: Final answer
    x = 1,065.23

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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.