Home / 8,618.76-12,928.88-2,378.77

Finding the Fourth Proportional to 8,618.76, 12,928.88 and 2,378.77

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Solution

The fourth proportional to 8,618.76, 12,928.88 and 2,378.77 is: 3,568.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.76 : 12,928.88 = 2,378.77 : x
  2. Step 2: Convert to fraction form
    8,618.76/12,928.88 = 2,378.77/x
  3. Step 3: Cross multiply
    8,618.76x = 12,928.88 × 2,378.77
  4. Step 4: Simplify right side
    8,618.76x = 30,754,819.98
  5. Step 5: Solve for x
    x = 30,754,819.98/8,618.76
  6. Step 6: Final answer
    x = 3,568.36

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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.