Home / 2,920.80-4,374.96-2,718.24

Finding the Fourth Proportional to 2,920.80, 4,374.96 and 2,718.24

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Solution

The fourth proportional to 2,920.80, 4,374.96 and 2,718.24 is: 4,071.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.80 : 4,374.96 = 2,718.24 : x
  2. Step 2: Convert to fraction form
    2,920.80/4,374.96 = 2,718.24/x
  3. Step 3: Cross multiply
    2,920.80x = 4,374.96 × 2,718.24
  4. Step 4: Simplify right side
    2,920.80x = 11,892,191.27
  5. Step 5: Solve for x
    x = 11,892,191.27/2,920.80
  6. Step 6: Final answer
    x = 4,071.55

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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.