Home / 4,488.40-6,729.48-2,147.20

Finding the Fourth Proportional to 4,488.40, 6,729.48 and 2,147.20

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Solution

The fourth proportional to 4,488.40, 6,729.48 and 2,147.20 is: 3,219.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,488.40 : 6,729.48 = 2,147.20 : x
  2. Step 2: Convert to fraction form
    4,488.40/6,729.48 = 2,147.20/x
  3. Step 3: Cross multiply
    4,488.40x = 6,729.48 × 2,147.20
  4. Step 4: Simplify right side
    4,488.40x = 14,449,539.46
  5. Step 5: Solve for x
    x = 14,449,539.46/4,488.40
  6. Step 6: Final answer
    x = 3,219.31

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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.