Home / 5,239.60-7,859.40-1,951.80

Finding the Fourth Proportional to 5,239.60, 7,859.40 and 1,951.80

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Solution

The fourth proportional to 5,239.60, 7,859.40 and 1,951.80 is: 2,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.60 : 7,859.40 = 1,951.80 : x
  2. Step 2: Convert to fraction form
    5,239.60/7,859.40 = 1,951.80/x
  3. Step 3: Cross multiply
    5,239.60x = 7,859.40 × 1,951.80
  4. Step 4: Simplify right side
    5,239.60x = 15,339,976.92
  5. Step 5: Solve for x
    x = 15,339,976.92/5,239.60
  6. Step 6: Final answer
    x = 2,927.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.