Home / 2,128.88-2,937.78-1,184.64

Finding the Fourth Proportional to 2,128.88, 2,937.78 and 1,184.64

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Solution

The fourth proportional to 2,128.88, 2,937.78 and 1,184.64 is: 1,634.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.88 : 2,937.78 = 1,184.64 : x
  2. Step 2: Convert to fraction form
    2,128.88/2,937.78 = 1,184.64/x
  3. Step 3: Cross multiply
    2,128.88x = 2,937.78 × 1,184.64
  4. Step 4: Simplify right side
    2,128.88x = 3,480,211.70
  5. Step 5: Solve for x
    x = 3,480,211.70/2,128.88
  6. Step 6: Final answer
    x = 1,634.76

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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.