Home / 3,970.85-5,475.15-3,222.47

Finding the Fourth Proportional to 3,970.85, 5,475.15 and 3,222.47

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Solution

The fourth proportional to 3,970.85, 5,475.15 and 3,222.47 is: 4,443.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.85 : 5,475.15 = 3,222.47 : x
  2. Step 2: Convert to fraction form
    3,970.85/5,475.15 = 3,222.47/x
  3. Step 3: Cross multiply
    3,970.85x = 5,475.15 × 3,222.47
  4. Step 4: Simplify right side
    3,970.85x = 17,643,506.62
  5. Step 5: Solve for x
    x = 17,643,506.62/3,970.85
  6. Step 6: Final answer
    x = 4,443.26

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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.