Home / 2,867.13-3,956.78-1,688.58

Finding the Fourth Proportional to 2,867.13, 3,956.78 and 1,688.58

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Solution

The fourth proportional to 2,867.13, 3,956.78 and 1,688.58 is: 2,330.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.13 : 3,956.78 = 1,688.58 : x
  2. Step 2: Convert to fraction form
    2,867.13/3,956.78 = 1,688.58/x
  3. Step 3: Cross multiply
    2,867.13x = 3,956.78 × 1,688.58
  4. Step 4: Simplify right side
    2,867.13x = 6,681,339.57
  5. Step 5: Solve for x
    x = 6,681,339.57/2,867.13
  6. Step 6: Final answer
    x = 2,330.32

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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.