Home / 3,970.13-5,479.04-2,291.85

Finding the Fourth Proportional to 3,970.13, 5,479.04 and 2,291.85

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Solution

The fourth proportional to 3,970.13, 5,479.04 and 2,291.85 is: 3,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.13 : 5,479.04 = 2,291.85 : x
  2. Step 2: Convert to fraction form
    3,970.13/5,479.04 = 2,291.85/x
  3. Step 3: Cross multiply
    3,970.13x = 5,479.04 × 2,291.85
  4. Step 4: Simplify right side
    3,970.13x = 12,557,126.36
  5. Step 5: Solve for x
    x = 12,557,126.36/3,970.13
  6. Step 6: Final answer
    x = 3,162.90

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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.