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Finding the Fourth Proportional to 8,615.80, 12,923.70 and 4,232.35

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Solution

The fourth proportional to 8,615.80, 12,923.70 and 4,232.35 is: 6,348.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.80 : 12,923.70 = 4,232.35 : x
  2. Step 2: Convert to fraction form
    8,615.80/12,923.70 = 4,232.35/x
  3. Step 3: Cross multiply
    8,615.80x = 12,923.70 × 4,232.35
  4. Step 4: Simplify right side
    8,615.80x = 54,697,621.70
  5. Step 5: Solve for x
    x = 54,697,621.70/8,615.80
  6. Step 6: Final answer
    x = 6,348.53

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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.