Home / 2,859.18-3,945.76-1,680.02

Finding the Fourth Proportional to 2,859.18, 3,945.76 and 1,680.02

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Solution

The fourth proportional to 2,859.18, 3,945.76 and 1,680.02 is: 2,318.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.18 : 3,945.76 = 1,680.02 : x
  2. Step 2: Convert to fraction form
    2,859.18/3,945.76 = 1,680.02/x
  3. Step 3: Cross multiply
    2,859.18x = 3,945.76 × 1,680.02
  4. Step 4: Simplify right side
    2,859.18x = 6,628,955.72
  5. Step 5: Solve for x
    x = 6,628,955.72/2,859.18
  6. Step 6: Final answer
    x = 2,318.48

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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.