Home / 1,977.52-2,728.98-1,191.58

Finding the Fourth Proportional to 1,977.52, 2,728.98 and 1,191.58

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Solution

The fourth proportional to 1,977.52, 2,728.98 and 1,191.58 is: 1,644.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.52 : 2,728.98 = 1,191.58 : x
  2. Step 2: Convert to fraction form
    1,977.52/2,728.98 = 1,191.58/x
  3. Step 3: Cross multiply
    1,977.52x = 2,728.98 × 1,191.58
  4. Step 4: Simplify right side
    1,977.52x = 3,251,797.99
  5. Step 5: Solve for x
    x = 3,251,797.99/1,977.52
  6. Step 6: Final answer
    x = 1,644.38

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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.