Home / 2,077.80-3,124.80-1,867.20

Finding the Fourth Proportional to 2,077.80, 3,124.80 and 1,867.20

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Solution

The fourth proportional to 2,077.80, 3,124.80 and 1,867.20 is: 2,808.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.80 : 3,124.80 = 1,867.20 : x
  2. Step 2: Convert to fraction form
    2,077.80/3,124.80 = 1,867.20/x
  3. Step 3: Cross multiply
    2,077.80x = 3,124.80 × 1,867.20
  4. Step 4: Simplify right side
    2,077.80x = 5,834,626.56
  5. Step 5: Solve for x
    x = 5,834,626.56/2,077.80
  6. Step 6: Final answer
    x = 2,808.08

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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.