Home / 3,686.98-5,088.10-2,115.08

Finding the Fourth Proportional to 3,686.98, 5,088.10 and 2,115.08

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Solution

The fourth proportional to 3,686.98, 5,088.10 and 2,115.08 is: 2,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.98 : 5,088.10 = 2,115.08 : x
  2. Step 2: Convert to fraction form
    3,686.98/5,088.10 = 2,115.08/x
  3. Step 3: Cross multiply
    3,686.98x = 5,088.10 × 2,115.08
  4. Step 4: Simplify right side
    3,686.98x = 10,761,738.55
  5. Step 5: Solve for x
    x = 10,761,738.55/3,686.98
  6. Step 6: Final answer
    x = 2,918.85

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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.