Home / 5,815.29-8,725.25-2,117.77

Finding the Fourth Proportional to 5,815.29, 8,725.25 and 2,117.77

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Solution

The fourth proportional to 5,815.29, 8,725.25 and 2,117.77 is: 3,177.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.29 : 8,725.25 = 2,117.77 : x
  2. Step 2: Convert to fraction form
    5,815.29/8,725.25 = 2,117.77/x
  3. Step 3: Cross multiply
    5,815.29x = 8,725.25 × 2,117.77
  4. Step 4: Simplify right side
    5,815.29x = 18,478,072.69
  5. Step 5: Solve for x
    x = 18,478,072.69/5,815.29
  6. Step 6: Final answer
    x = 3,177.50

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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.