Home / 2,680.40-4,015.80-2,373.20

Finding the Fourth Proportional to 2,680.40, 4,015.80 and 2,373.20

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Solution

The fourth proportional to 2,680.40, 4,015.80 and 2,373.20 is: 3,555.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.40 : 4,015.80 = 2,373.20 : x
  2. Step 2: Convert to fraction form
    2,680.40/4,015.80 = 2,373.20/x
  3. Step 3: Cross multiply
    2,680.40x = 4,015.80 × 2,373.20
  4. Step 4: Simplify right side
    2,680.40x = 9,530,296.56
  5. Step 5: Solve for x
    x = 9,530,296.56/2,680.40
  6. Step 6: Final answer
    x = 3,555.55

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1.5x scale

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.