Home / 6,315.42-9,474.30-2,155.20

Finding the Fourth Proportional to 6,315.42, 9,474.30 and 2,155.20

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Solution

The fourth proportional to 6,315.42, 9,474.30 and 2,155.20 is: 3,233.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,315.42 : 9,474.30 = 2,155.20 : x
  2. Step 2: Convert to fraction form
    6,315.42/9,474.30 = 2,155.20/x
  3. Step 3: Cross multiply
    6,315.42x = 9,474.30 × 2,155.20
  4. Step 4: Simplify right side
    6,315.42x = 20,419,011.36
  5. Step 5: Solve for x
    x = 20,419,011.36/6,315.42
  6. Step 6: Final answer
    x = 3,233.20

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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.