Home / 3,279.61-4,920.29-1,330.75

Finding the Fourth Proportional to 3,279.61, 4,920.29 and 1,330.75

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Solution

The fourth proportional to 3,279.61, 4,920.29 and 1,330.75 is: 1,996.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.61 : 4,920.29 = 1,330.75 : x
  2. Step 2: Convert to fraction form
    3,279.61/4,920.29 = 1,330.75/x
  3. Step 3: Cross multiply
    3,279.61x = 4,920.29 × 1,330.75
  4. Step 4: Simplify right side
    3,279.61x = 6,547,669.26
  5. Step 5: Solve for x
    x = 6,547,669.26/3,279.61
  6. Step 6: Final answer
    x = 1,996.48

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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.