Home / 1,089.44-1,624.60-1,080.20

Finding the Fourth Proportional to 1,089.44, 1,624.60 and 1,080.20

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Solution

The fourth proportional to 1,089.44, 1,624.60 and 1,080.20 is: 1,610.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089.44 : 1,624.60 = 1,080.20 : x
  2. Step 2: Convert to fraction form
    1,089.44/1,624.60 = 1,080.20/x
  3. Step 3: Cross multiply
    1,089.44x = 1,624.60 × 1,080.20
  4. Step 4: Simplify right side
    1,089.44x = 1,754,892.92
  5. Step 5: Solve for x
    x = 1,754,892.92/1,089.44
  6. Step 6: Final answer
    x = 1,610.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.