Home / 8,315.40-12,475.58-2,472.20

Finding the Fourth Proportional to 8,315.40, 12,475.58 and 2,472.20

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Solution

The fourth proportional to 8,315.40, 12,475.58 and 2,472.20 is: 3,709.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.40 : 12,475.58 = 2,472.20 : x
  2. Step 2: Convert to fraction form
    8,315.40/12,475.58 = 2,472.20/x
  3. Step 3: Cross multiply
    8,315.40x = 12,475.58 × 2,472.20
  4. Step 4: Simplify right side
    8,315.40x = 30,842,128.88
  5. Step 5: Solve for x
    x = 30,842,128.88/8,315.40
  6. Step 6: Final answer
    x = 3,709.04

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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.