Home / 5,815.62-8,725.14-2,117.70

Finding the Fourth Proportional to 5,815.62, 8,725.14 and 2,117.70

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Solution

The fourth proportional to 5,815.62, 8,725.14 and 2,117.70 is: 3,177.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.62 : 8,725.14 = 2,117.70 : x
  2. Step 2: Convert to fraction form
    5,815.62/8,725.14 = 2,117.70/x
  3. Step 3: Cross multiply
    5,815.62x = 8,725.14 × 2,117.70
  4. Step 4: Simplify right side
    5,815.62x = 18,477,228.98
  5. Step 5: Solve for x
    x = 18,477,228.98/5,815.62
  6. Step 6: Final answer
    x = 3,177.17

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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.