Home / 1,803.30-2,488.85-1,057.70

Finding the Fourth Proportional to 1,803.30, 2,488.85 and 1,057.70

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Solution

The fourth proportional to 1,803.30, 2,488.85 and 1,057.70 is: 1,459.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803.30 : 2,488.85 = 1,057.70 : x
  2. Step 2: Convert to fraction form
    1,803.30/2,488.85 = 1,057.70/x
  3. Step 3: Cross multiply
    1,803.30x = 2,488.85 × 1,057.70
  4. Step 4: Simplify right side
    1,803.30x = 2,632,456.65
  5. Step 5: Solve for x
    x = 2,632,456.65/1,803.30
  6. Step 6: Final answer
    x = 1,459.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.