Home / 4,721.20-7,074.40-2,986.16

Finding the Fourth Proportional to 4,721.20, 7,074.40 and 2,986.16

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Solution

The fourth proportional to 4,721.20, 7,074.40 and 2,986.16 is: 4,474.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.20 : 7,074.40 = 2,986.16 : x
  2. Step 2: Convert to fraction form
    4,721.20/7,074.40 = 2,986.16/x
  3. Step 3: Cross multiply
    4,721.20x = 7,074.40 × 2,986.16
  4. Step 4: Simplify right side
    4,721.20x = 21,125,290.30
  5. Step 5: Solve for x
    x = 21,125,290.30/4,721.20
  6. Step 6: Final answer
    x = 4,474.56

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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.