Home / 2,909.40-4,364.10-2,077.80

Finding the Fourth Proportional to 2,909.40, 4,364.10 and 2,077.80

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Solution

The fourth proportional to 2,909.40, 4,364.10 and 2,077.80 is: 3,116.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.40 : 4,364.10 = 2,077.80 : x
  2. Step 2: Convert to fraction form
    2,909.40/4,364.10 = 2,077.80/x
  3. Step 3: Cross multiply
    2,909.40x = 4,364.10 × 2,077.80
  4. Step 4: Simplify right side
    2,909.40x = 9,067,726.98
  5. Step 5: Solve for x
    x = 9,067,726.98/2,909.40
  6. Step 6: Final answer
    x = 3,116.70

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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.