Home / 3,888.61-5,366.25-2,120.24

Finding the Fourth Proportional to 3,888.61, 5,366.25 and 2,120.24

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Solution

The fourth proportional to 3,888.61, 5,366.25 and 2,120.24 is: 2,925.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.61 : 5,366.25 = 2,120.24 : x
  2. Step 2: Convert to fraction form
    3,888.61/5,366.25 = 2,120.24/x
  3. Step 3: Cross multiply
    3,888.61x = 5,366.25 × 2,120.24
  4. Step 4: Simplify right side
    3,888.61x = 11,377,751.32
  5. Step 5: Solve for x
    x = 11,377,751.32/3,888.61
  6. Step 6: Final answer
    x = 2,925.92

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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.