Home / 8,318.12-12,479.18-3,124.04

Finding the Fourth Proportional to 8,318.12, 12,479.18 and 3,124.04

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Solution

The fourth proportional to 8,318.12, 12,479.18 and 3,124.04 is: 4,686.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.12 : 12,479.18 = 3,124.04 : x
  2. Step 2: Convert to fraction form
    8,318.12/12,479.18 = 3,124.04/x
  3. Step 3: Cross multiply
    8,318.12x = 12,479.18 × 3,124.04
  4. Step 4: Simplify right side
    8,318.12x = 38,985,457.49
  5. Step 5: Solve for x
    x = 38,985,457.49/8,318.12
  6. Step 6: Final answer
    x = 4,686.81

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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.