Home / 3,687.16-5,088.54-2,115.28

Finding the Fourth Proportional to 3,687.16, 5,088.54 and 2,115.28

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Solution

The fourth proportional to 3,687.16, 5,088.54 and 2,115.28 is: 2,919.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.16 : 5,088.54 = 2,115.28 : x
  2. Step 2: Convert to fraction form
    3,687.16/5,088.54 = 2,115.28/x
  3. Step 3: Cross multiply
    3,687.16x = 5,088.54 × 2,115.28
  4. Step 4: Simplify right side
    3,687.16x = 10,763,686.89
  5. Step 5: Solve for x
    x = 10,763,686.89/3,687.16
  6. Step 6: Final answer
    x = 2,919.24

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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.