Home / 2,187.68-3,275.18-1,962.32

Finding the Fourth Proportional to 2,187.68, 3,275.18 and 1,962.32

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Solution

The fourth proportional to 2,187.68, 3,275.18 and 1,962.32 is: 2,937.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.68 : 3,275.18 = 1,962.32 : x
  2. Step 2: Convert to fraction form
    2,187.68/3,275.18 = 1,962.32/x
  3. Step 3: Cross multiply
    2,187.68x = 3,275.18 × 1,962.32
  4. Step 4: Simplify right side
    2,187.68x = 6,426,951.22
  5. Step 5: Solve for x
    x = 6,426,951.22/2,187.68
  6. Step 6: Final answer
    x = 2,937.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.