Home / 8,315.56-12,472.99-3,871.70

Finding the Fourth Proportional to 8,315.56, 12,472.99 and 3,871.70

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Solution

The fourth proportional to 8,315.56, 12,472.99 and 3,871.70 is: 5,807.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.56 : 12,472.99 = 3,871.70 : x
  2. Step 2: Convert to fraction form
    8,315.56/12,472.99 = 3,871.70/x
  3. Step 3: Cross multiply
    8,315.56x = 12,472.99 × 3,871.70
  4. Step 4: Simplify right side
    8,315.56x = 48,291,675.38
  5. Step 5: Solve for x
    x = 48,291,675.38/8,315.56
  6. Step 6: Final answer
    x = 5,807.39

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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.