Home / 3,865.80-5,336.10-2,521.56

Finding the Fourth Proportional to 3,865.80, 5,336.10 and 2,521.56

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Solution

The fourth proportional to 3,865.80, 5,336.10 and 2,521.56 is: 3,480.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.80 : 5,336.10 = 2,521.56 : x
  2. Step 2: Convert to fraction form
    3,865.80/5,336.10 = 2,521.56/x
  3. Step 3: Cross multiply
    3,865.80x = 5,336.10 × 2,521.56
  4. Step 4: Simplify right side
    3,865.80x = 13,455,296.32
  5. Step 5: Solve for x
    x = 13,455,296.32/3,865.80
  6. Step 6: Final answer
    x = 3,480.60

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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.