Home / 2,043.76-2,820-1,297.84

Finding the Fourth Proportional to 2,043.76, 2,820 and 1,297.84

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Solution

The fourth proportional to 2,043.76, 2,820 and 1,297.84 is: 1,790.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,043.76 : 2,820 = 1,297.84 : x
  2. Step 2: Convert to fraction form
    2,043.76/2,820 = 1,297.84/x
  3. Step 3: Cross multiply
    2,043.76x = 2,820 × 1,297.84
  4. Step 4: Simplify right side
    2,043.76x = 3,659,908.80
  5. Step 5: Solve for x
    x = 3,659,908.80/2,043.76
  6. Step 6: Final answer
    x = 1,790.77

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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.