Home / 3,470.45-4,789.26-1,978.29

Finding the Fourth Proportional to 3,470.45, 4,789.26 and 1,978.29

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Solution

The fourth proportional to 3,470.45, 4,789.26 and 1,978.29 is: 2,730.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.45 : 4,789.26 = 1,978.29 : x
  2. Step 2: Convert to fraction form
    3,470.45/4,789.26 = 1,978.29/x
  3. Step 3: Cross multiply
    3,470.45x = 4,789.26 × 1,978.29
  4. Step 4: Simplify right side
    3,470.45x = 9,474,545.17
  5. Step 5: Solve for x
    x = 9,474,545.17/3,470.45
  6. Step 6: Final answer
    x = 2,730.07

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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.