Home / 2,091.20-2,877.22-1,590.92

Finding the Fourth Proportional to 2,091.20, 2,877.22 and 1,590.92

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Solution

The fourth proportional to 2,091.20, 2,877.22 and 1,590.92 is: 2,188.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.20 : 2,877.22 = 1,590.92 : x
  2. Step 2: Convert to fraction form
    2,091.20/2,877.22 = 1,590.92/x
  3. Step 3: Cross multiply
    2,091.20x = 2,877.22 × 1,590.92
  4. Step 4: Simplify right side
    2,091.20x = 4,577,426.84
  5. Step 5: Solve for x
    x = 4,577,426.84/2,091.20
  6. Step 6: Final answer
    x = 2,188.90

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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.