Home / 2,914.20-4,021.62-1,587.92

Finding the Fourth Proportional to 2,914.20, 4,021.62 and 1,587.92

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Solution

The fourth proportional to 2,914.20, 4,021.62 and 1,587.92 is: 2,191.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,914.20 : 4,021.62 = 1,587.92 : x
  2. Step 2: Convert to fraction form
    2,914.20/4,021.62 = 1,587.92/x
  3. Step 3: Cross multiply
    2,914.20x = 4,021.62 × 1,587.92
  4. Step 4: Simplify right side
    2,914.20x = 6,385,990.72
  5. Step 5: Solve for x
    x = 6,385,990.72/2,914.20
  6. Step 6: Final answer
    x = 2,191.34

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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.