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Finding the Fourth Proportional to 1,777.77, 2,452.90 and 1,079.01

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Solution

The fourth proportional to 1,777.77, 2,452.90 and 1,079.01 is: 1,488.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,777.77 : 2,452.90 = 1,079.01 : x
  2. Step 2: Convert to fraction form
    1,777.77/2,452.90 = 1,079.01/x
  3. Step 3: Cross multiply
    1,777.77x = 2,452.90 × 1,079.01
  4. Step 4: Simplify right side
    1,777.77x = 2,646,703.63
  5. Step 5: Solve for x
    x = 2,646,703.63/1,777.77
  6. Step 6: Final answer
    x = 1,488.78

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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.