Home / 2,657.06-3,981.94-1,355.80

Finding the Fourth Proportional to 2,657.06, 3,981.94 and 1,355.80

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Solution

The fourth proportional to 2,657.06, 3,981.94 and 1,355.80 is: 2,031.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.06 : 3,981.94 = 1,355.80 : x
  2. Step 2: Convert to fraction form
    2,657.06/3,981.94 = 1,355.80/x
  3. Step 3: Cross multiply
    2,657.06x = 3,981.94 × 1,355.80
  4. Step 4: Simplify right side
    2,657.06x = 5,398,714.25
  5. Step 5: Solve for x
    x = 5,398,714.25/2,657.06
  6. Step 6: Final answer
    x = 2,031.84

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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.