Home / 8,819.06-12,159.66-7,621.88

Finding the Fourth Proportional to 8,819.06, 12,159.66 and 7,621.88

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Solution

The fourth proportional to 8,819.06, 12,159.66 and 7,621.88 is: 10,509.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,819.06 : 12,159.66 = 7,621.88 : x
  2. Step 2: Convert to fraction form
    8,819.06/12,159.66 = 7,621.88/x
  3. Step 3: Cross multiply
    8,819.06x = 12,159.66 × 7,621.88
  4. Step 4: Simplify right side
    8,819.06x = 92,679,469.36
  5. Step 5: Solve for x
    x = 92,679,469.36/8,819.06
  6. Step 6: Final answer
    x = 10,509.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.