Home / 1,035.20-1,553.26-1,018.80

Finding the Fourth Proportional to 1,035.20, 1,553.26 and 1,018.80

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Solution

The fourth proportional to 1,035.20, 1,553.26 and 1,018.80 is: 1,528.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.20 : 1,553.26 = 1,018.80 : x
  2. Step 2: Convert to fraction form
    1,035.20/1,553.26 = 1,018.80/x
  3. Step 3: Cross multiply
    1,035.20x = 1,553.26 × 1,018.80
  4. Step 4: Simplify right side
    1,035.20x = 1,582,461.29
  5. Step 5: Solve for x
    x = 1,582,461.29/1,035.20
  6. Step 6: Final answer
    x = 1,528.65

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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.