Home / 1,400.98-2,101.30-579.15

Finding the Fourth Proportional to 1,400.98, 2,101.30 and 579.15

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Solution

The fourth proportional to 1,400.98, 2,101.30 and 579.15 is: 868.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.98 : 2,101.30 = 579.15 : x
  2. Step 2: Convert to fraction form
    1,400.98/2,101.30 = 579.15/x
  3. Step 3: Cross multiply
    1,400.98x = 2,101.30 × 579.15
  4. Step 4: Simplify right side
    1,400.98x = 1,216,967.90
  5. Step 5: Solve for x
    x = 1,216,967.90/1,400.98
  6. Step 6: Final answer
    x = 868.65

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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.