Home / 2,128.61-2,937.49-1,184.49

Finding the Fourth Proportional to 2,128.61, 2,937.49 and 1,184.49

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Solution

The fourth proportional to 2,128.61, 2,937.49 and 1,184.49 is: 1,634.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.61 : 2,937.49 = 1,184.49 : x
  2. Step 2: Convert to fraction form
    2,128.61/2,937.49 = 1,184.49/x
  3. Step 3: Cross multiply
    2,128.61x = 2,937.49 × 1,184.49
  4. Step 4: Simplify right side
    2,128.61x = 3,479,424.57
  5. Step 5: Solve for x
    x = 3,479,424.57/2,128.61
  6. Step 6: Final answer
    x = 1,634.60

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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.