Home / 2,914.12-4,021.38-1,587.80

Finding the Fourth Proportional to 2,914.12, 4,021.38 and 1,587.80

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Solution

The fourth proportional to 2,914.12, 4,021.38 and 1,587.80 is: 2,191.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,914.12 : 4,021.38 = 1,587.80 : x
  2. Step 2: Convert to fraction form
    2,914.12/4,021.38 = 1,587.80/x
  3. Step 3: Cross multiply
    2,914.12x = 4,021.38 × 1,587.80
  4. Step 4: Simplify right side
    2,914.12x = 6,385,147.16
  5. Step 5: Solve for x
    x = 6,385,147.16/2,914.12
  6. Step 6: Final answer
    x = 2,191.11

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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.