Home / 2,688.30-3,708.75-1,693.02

Finding the Fourth Proportional to 2,688.30, 3,708.75 and 1,693.02

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Solution

The fourth proportional to 2,688.30, 3,708.75 and 1,693.02 is: 2,335.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.30 : 3,708.75 = 1,693.02 : x
  2. Step 2: Convert to fraction form
    2,688.30/3,708.75 = 1,693.02/x
  3. Step 3: Cross multiply
    2,688.30x = 3,708.75 × 1,693.02
  4. Step 4: Simplify right side
    2,688.30x = 6,278,987.93
  5. Step 5: Solve for x
    x = 6,278,987.93/2,688.30
  6. Step 6: Final answer
    x = 2,335.67

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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.