Home / 2,128.93-2,937.78-1,184.65

Finding the Fourth Proportional to 2,128.93, 2,937.78 and 1,184.65

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Solution

The fourth proportional to 2,128.93, 2,937.78 and 1,184.65 is: 1,634.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.93 : 2,937.78 = 1,184.65 : x
  2. Step 2: Convert to fraction form
    2,128.93/2,937.78 = 1,184.65/x
  3. Step 3: Cross multiply
    2,128.93x = 2,937.78 × 1,184.65
  4. Step 4: Simplify right side
    2,128.93x = 3,480,241.08
  5. Step 5: Solve for x
    x = 3,480,241.08/2,128.93
  6. Step 6: Final answer
    x = 1,634.74

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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.