Home / 3,888.95-5,818.85-2,158.79

Finding the Fourth Proportional to 3,888.95, 5,818.85 and 2,158.79

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Solution

The fourth proportional to 3,888.95, 5,818.85 and 2,158.79 is: 3,230.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.95 : 5,818.85 = 2,158.79 : x
  2. Step 2: Convert to fraction form
    3,888.95/5,818.85 = 2,158.79/x
  3. Step 3: Cross multiply
    3,888.95x = 5,818.85 × 2,158.79
  4. Step 4: Simplify right side
    3,888.95x = 12,561,664.40
  5. Step 5: Solve for x
    x = 12,561,664.40/3,888.95
  6. Step 6: Final answer
    x = 3,230.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.