Home / 3,687.80-5,088.78-2,271.26

Finding the Fourth Proportional to 3,687.80, 5,088.78 and 2,271.26

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Solution

The fourth proportional to 3,687.80, 5,088.78 and 2,271.26 is: 3,134.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.80 : 5,088.78 = 2,271.26 : x
  2. Step 2: Convert to fraction form
    3,687.80/5,088.78 = 2,271.26/x
  3. Step 3: Cross multiply
    3,687.80x = 5,088.78 × 2,271.26
  4. Step 4: Simplify right side
    3,687.80x = 11,557,955.18
  5. Step 5: Solve for x
    x = 11,557,955.18/3,687.80
  6. Step 6: Final answer
    x = 3,134.11

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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.