Home / 3,971.12-5,480.23-2,377.84

Finding the Fourth Proportional to 3,971.12, 5,480.23 and 2,377.84

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Solution

The fourth proportional to 3,971.12, 5,480.23 and 2,377.84 is: 3,281.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.12 : 5,480.23 = 2,377.84 : x
  2. Step 2: Convert to fraction form
    3,971.12/5,480.23 = 2,377.84/x
  3. Step 3: Cross multiply
    3,971.12x = 5,480.23 × 2,377.84
  4. Step 4: Simplify right side
    3,971.12x = 13,031,085.27
  5. Step 5: Solve for x
    x = 13,031,085.27/3,971.12
  6. Step 6: Final answer
    x = 3,281.46

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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.