Home / 2,752.30-4,128.64-1,108.85

Finding the Fourth Proportional to 2,752.30, 4,128.64 and 1,108.85

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Solution

The fourth proportional to 2,752.30, 4,128.64 and 1,108.85 is: 1,663.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,752.30 : 4,128.64 = 1,108.85 : x
  2. Step 2: Convert to fraction form
    2,752.30/4,128.64 = 1,108.85/x
  3. Step 3: Cross multiply
    2,752.30x = 4,128.64 × 1,108.85
  4. Step 4: Simplify right side
    2,752.30x = 4,578,042.46
  5. Step 5: Solve for x
    x = 4,578,042.46/2,752.30
  6. Step 6: Final answer
    x = 1,663.35

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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.