Home / 3,686.80-5,087.40-2,114.96

Finding the Fourth Proportional to 3,686.80, 5,087.40 and 2,114.96

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Solution

The fourth proportional to 3,686.80, 5,087.40 and 2,114.96 is: 2,918.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.80 : 5,087.40 = 2,114.96 : x
  2. Step 2: Convert to fraction form
    3,686.80/5,087.40 = 2,114.96/x
  3. Step 3: Cross multiply
    3,686.80x = 5,087.40 × 2,114.96
  4. Step 4: Simplify right side
    3,686.80x = 10,759,647.50
  5. Step 5: Solve for x
    x = 10,759,647.50/3,686.80
  6. Step 6: Final answer
    x = 2,918.42

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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.