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Finding the Fourth Proportional to 8,510.70, 12,756.60 and 3,578.88

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Solution

The fourth proportional to 8,510.70, 12,756.60 and 3,578.88 is: 5,364.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,510.70 : 12,756.60 = 3,578.88 : x
  2. Step 2: Convert to fraction form
    8,510.70/12,756.60 = 3,578.88/x
  3. Step 3: Cross multiply
    8,510.70x = 12,756.60 × 3,578.88
  4. Step 4: Simplify right side
    8,510.70x = 45,654,340.61
  5. Step 5: Solve for x
    x = 45,654,340.61/8,510.70
  6. Step 6: Final answer
    x = 5,364.35

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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.