Home / 4,679.25-6,456.78-2,689.53

Finding the Fourth Proportional to 4,679.25, 6,456.78 and 2,689.53

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Solution

The fourth proportional to 4,679.25, 6,456.78 and 2,689.53 is: 3,711.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,679.25 : 6,456.78 = 2,689.53 : x
  2. Step 2: Convert to fraction form
    4,679.25/6,456.78 = 2,689.53/x
  3. Step 3: Cross multiply
    4,679.25x = 6,456.78 × 2,689.53
  4. Step 4: Simplify right side
    4,679.25x = 17,365,703.51
  5. Step 5: Solve for x
    x = 17,365,703.51/4,679.25
  6. Step 6: Final answer
    x = 3,711.22

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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.