Home / 2,148.85-2,961.66-1,728.46

Finding the Fourth Proportional to 2,148.85, 2,961.66 and 1,728.46

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Solution

The fourth proportional to 2,148.85, 2,961.66 and 1,728.46 is: 2,382.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.85 : 2,961.66 = 1,728.46 : x
  2. Step 2: Convert to fraction form
    2,148.85/2,961.66 = 1,728.46/x
  3. Step 3: Cross multiply
    2,148.85x = 2,961.66 × 1,728.46
  4. Step 4: Simplify right side
    2,148.85x = 5,119,110.84
  5. Step 5: Solve for x
    x = 5,119,110.84/2,148.85
  6. Step 6: Final answer
    x = 2,382.26

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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.