Home / 3,687.60-5,088.80-2,115.59

Finding the Fourth Proportional to 3,687.60, 5,088.80 and 2,115.59

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Solution

The fourth proportional to 3,687.60, 5,088.80 and 2,115.59 is: 2,919.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.60 : 5,088.80 = 2,115.59 : x
  2. Step 2: Convert to fraction form
    3,687.60/5,088.80 = 2,115.59/x
  3. Step 3: Cross multiply
    3,687.60x = 5,088.80 × 2,115.59
  4. Step 4: Simplify right side
    3,687.60x = 10,765,814.39
  5. Step 5: Solve for x
    x = 10,765,814.39/3,687.60
  6. Step 6: Final answer
    x = 2,919.46

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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.