Home / 2,148.38-2,964.77-1,216.88

Finding the Fourth Proportional to 2,148.38, 2,964.77 and 1,216.88

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Solution

The fourth proportional to 2,148.38, 2,964.77 and 1,216.88 is: 1,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.38 : 2,964.77 = 1,216.88 : x
  2. Step 2: Convert to fraction form
    2,148.38/2,964.77 = 1,216.88/x
  3. Step 3: Cross multiply
    2,148.38x = 2,964.77 × 1,216.88
  4. Step 4: Simplify right side
    2,148.38x = 3,607,769.32
  5. Step 5: Solve for x
    x = 3,607,769.32/2,148.38
  6. Step 6: Final answer
    x = 1,679.30

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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.