Home / 4,678.25-6,456.11-2,689.16

Finding the Fourth Proportional to 4,678.25, 6,456.11 and 2,689.16

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Solution

The fourth proportional to 4,678.25, 6,456.11 and 2,689.16 is: 3,711.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.25 : 6,456.11 = 2,689.16 : x
  2. Step 2: Convert to fraction form
    4,678.25/6,456.11 = 2,689.16/x
  3. Step 3: Cross multiply
    4,678.25x = 6,456.11 × 2,689.16
  4. Step 4: Simplify right side
    4,678.25x = 17,361,467.04
  5. Step 5: Solve for x
    x = 17,361,467.04/4,678.25
  6. Step 6: Final answer
    x = 3,711.11

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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.