Home / 4,678.29-6,456.26-2,689.50

Finding the Fourth Proportional to 4,678.29, 6,456.26 and 2,689.50

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Solution

The fourth proportional to 4,678.29, 6,456.26 and 2,689.50 is: 3,711.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.29 : 6,456.26 = 2,689.50 : x
  2. Step 2: Convert to fraction form
    4,678.29/6,456.26 = 2,689.50/x
  3. Step 3: Cross multiply
    4,678.29x = 6,456.26 × 2,689.50
  4. Step 4: Simplify right side
    4,678.29x = 17,364,097.82
  5. Step 5: Solve for x
    x = 17,364,097.82/4,678.29
  6. Step 6: Final answer
    x = 3,711.63

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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.