Home / 3,708.18-5,115.15-2,215.62

Finding the Fourth Proportional to 3,708.18, 5,115.15 and 2,215.62

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Solution

The fourth proportional to 3,708.18, 5,115.15 and 2,215.62 is: 3,056.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.18 : 5,115.15 = 2,215.62 : x
  2. Step 2: Convert to fraction form
    3,708.18/5,115.15 = 2,215.62/x
  3. Step 3: Cross multiply
    3,708.18x = 5,115.15 × 2,215.62
  4. Step 4: Simplify right side
    3,708.18x = 11,333,228.64
  5. Step 5: Solve for x
    x = 11,333,228.64/3,708.18
  6. Step 6: Final answer
    x = 3,056.28

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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.