Home / 8,315.22-12,469.15-3,117.45

Finding the Fourth Proportional to 8,315.22, 12,469.15 and 3,117.45

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Solution

The fourth proportional to 8,315.22, 12,469.15 and 3,117.45 is: 4,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.22 : 12,469.15 = 3,117.45 : x
  2. Step 2: Convert to fraction form
    8,315.22/12,469.15 = 3,117.45/x
  3. Step 3: Cross multiply
    8,315.22x = 12,469.15 × 3,117.45
  4. Step 4: Simplify right side
    8,315.22x = 38,871,951.67
  5. Step 5: Solve for x
    x = 38,871,951.67/8,315.22
  6. Step 6: Final answer
    x = 4,674.80

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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.