Home / 3,970.56-5,479.76-3,306.24

Finding the Fourth Proportional to 3,970.56, 5,479.76 and 3,306.24

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Solution

The fourth proportional to 3,970.56, 5,479.76 and 3,306.24 is: 4,562.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.56 : 5,479.76 = 3,306.24 : x
  2. Step 2: Convert to fraction form
    3,970.56/5,479.76 = 3,306.24/x
  3. Step 3: Cross multiply
    3,970.56x = 5,479.76 × 3,306.24
  4. Step 4: Simplify right side
    3,970.56x = 18,117,401.70
  5. Step 5: Solve for x
    x = 18,117,401.70/3,970.56
  6. Step 6: Final answer
    x = 4,562.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.