Home / 1,924.78-2,656.00-1,178.95

Finding the Fourth Proportional to 1,924.78, 2,656.00 and 1,178.95

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Solution

The fourth proportional to 1,924.78, 2,656.00 and 1,178.95 is: 1,626.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,924.78 : 2,656.00 = 1,178.95 : x
  2. Step 2: Convert to fraction form
    1,924.78/2,656.00 = 1,178.95/x
  3. Step 3: Cross multiply
    1,924.78x = 2,656.00 × 1,178.95
  4. Step 4: Simplify right side
    1,924.78x = 3,131,281.61
  5. Step 5: Solve for x
    x = 3,131,281.61/1,924.78
  6. Step 6: Final answer
    x = 1,626.83

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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.