Home / 1,080.28-1,621.90-560.64

Finding the Fourth Proportional to 1,080.28, 1,621.90 and 560.64

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Solution

The fourth proportional to 1,080.28, 1,621.90 and 560.64 is: 841.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.28 : 1,621.90 = 560.64 : x
  2. Step 2: Convert to fraction form
    1,080.28/1,621.90 = 560.64/x
  3. Step 3: Cross multiply
    1,080.28x = 1,621.90 × 560.64
  4. Step 4: Simplify right side
    1,080.28x = 909,302.02
  5. Step 5: Solve for x
    x = 909,302.02/1,080.28
  6. Step 6: Final answer
    x = 841.73

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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.