Home / 2,871.45-3,962.30-1,927.05

Finding the Fourth Proportional to 2,871.45, 3,962.30 and 1,927.05

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Solution

The fourth proportional to 2,871.45, 3,962.30 and 1,927.05 is: 2,659.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.45 : 3,962.30 = 1,927.05 : x
  2. Step 2: Convert to fraction form
    2,871.45/3,962.30 = 1,927.05/x
  3. Step 3: Cross multiply
    2,871.45x = 3,962.30 × 1,927.05
  4. Step 4: Simplify right side
    2,871.45x = 7,635,550.22
  5. Step 5: Solve for x
    x = 7,635,550.22/2,871.45
  6. Step 6: Final answer
    x = 2,659.13

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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.