Home / 2,867.09-3,957.05-1,688.87

Finding the Fourth Proportional to 2,867.09, 3,957.05 and 1,688.87

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Solution

The fourth proportional to 2,867.09, 3,957.05 and 1,688.87 is: 2,330.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.09 : 3,957.05 = 1,688.87 : x
  2. Step 2: Convert to fraction form
    2,867.09/3,957.05 = 1,688.87/x
  3. Step 3: Cross multiply
    2,867.09x = 3,957.05 × 1,688.87
  4. Step 4: Simplify right side
    2,867.09x = 6,682,957.15
  5. Step 5: Solve for x
    x = 6,682,957.15/2,867.09
  6. Step 6: Final answer
    x = 2,330.92

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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.