Home / 7,305.13-10,965.50-3,147.20

Finding the Fourth Proportional to 7,305.13, 10,965.50 and 3,147.20

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Solution

The fourth proportional to 7,305.13, 10,965.50 and 3,147.20 is: 4,724.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,305.13 : 10,965.50 = 3,147.20 : x
  2. Step 2: Convert to fraction form
    7,305.13/10,965.50 = 3,147.20/x
  3. Step 3: Cross multiply
    7,305.13x = 10,965.50 × 3,147.20
  4. Step 4: Simplify right side
    7,305.13x = 34,510,621.60
  5. Step 5: Solve for x
    x = 34,510,621.60/7,305.13
  6. Step 6: Final answer
    x = 4,724.16

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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.