Home / 2,888.39-3,985.30-2,092.90

Finding the Fourth Proportional to 2,888.39, 3,985.30 and 2,092.90

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Solution

The fourth proportional to 2,888.39, 3,985.30 and 2,092.90 is: 2,887.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.39 : 3,985.30 = 2,092.90 : x
  2. Step 2: Convert to fraction form
    2,888.39/3,985.30 = 2,092.90/x
  3. Step 3: Cross multiply
    2,888.39x = 3,985.30 × 2,092.90
  4. Step 4: Simplify right side
    2,888.39x = 8,340,834.37
  5. Step 5: Solve for x
    x = 8,340,834.37/2,888.39
  6. Step 6: Final answer
    x = 2,887.71

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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.