Home / 1,630.72-2,252.36-1,187.92

Finding the Fourth Proportional to 1,630.72, 2,252.36 and 1,187.92

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Solution

The fourth proportional to 1,630.72, 2,252.36 and 1,187.92 is: 1,640.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,630.72 : 2,252.36 = 1,187.92 : x
  2. Step 2: Convert to fraction form
    1,630.72/2,252.36 = 1,187.92/x
  3. Step 3: Cross multiply
    1,630.72x = 2,252.36 × 1,187.92
  4. Step 4: Simplify right side
    1,630.72x = 2,675,623.49
  5. Step 5: Solve for x
    x = 2,675,623.49/1,630.72
  6. Step 6: Final answer
    x = 1,640.76

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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.