Home / 8,815.29-12,160.90-5,277.82

Finding the Fourth Proportional to 8,815.29, 12,160.90 and 5,277.82

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Solution

The fourth proportional to 8,815.29, 12,160.90 and 5,277.82 is: 7,280.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.29 : 12,160.90 = 5,277.82 : x
  2. Step 2: Convert to fraction form
    8,815.29/12,160.90 = 5,277.82/x
  3. Step 3: Cross multiply
    8,815.29x = 12,160.90 × 5,277.82
  4. Step 4: Simplify right side
    8,815.29x = 64,183,041.24
  5. Step 5: Solve for x
    x = 64,183,041.24/8,815.29
  6. Step 6: Final answer
    x = 7,280.88

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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.