Home / 3,680.31-5,078.90-2,001.76

Finding the Fourth Proportional to 3,680.31, 5,078.90 and 2,001.76

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Solution

The fourth proportional to 3,680.31, 5,078.90 and 2,001.76 is: 2,762.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.31 : 5,078.90 = 2,001.76 : x
  2. Step 2: Convert to fraction form
    3,680.31/5,078.90 = 2,001.76/x
  3. Step 3: Cross multiply
    3,680.31x = 5,078.90 × 2,001.76
  4. Step 4: Simplify right side
    3,680.31x = 10,166,703.46
  5. Step 5: Solve for x
    x = 10,166,703.46/3,680.31
  6. Step 6: Final answer
    x = 2,762.46

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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.