Home / 7,278.91-10,920.38-2,899.44

Finding the Fourth Proportional to 7,278.91, 10,920.38 and 2,899.44

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Solution

The fourth proportional to 7,278.91, 10,920.38 and 2,899.44 is: 4,349.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.91 : 10,920.38 = 2,899.44 : x
  2. Step 2: Convert to fraction form
    7,278.91/10,920.38 = 2,899.44/x
  3. Step 3: Cross multiply
    7,278.91x = 10,920.38 × 2,899.44
  4. Step 4: Simplify right side
    7,278.91x = 31,662,986.59
  5. Step 5: Solve for x
    x = 31,662,986.59/7,278.91
  6. Step 6: Final answer
    x = 4,349.96

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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.