Home / 2,128.84-2,937.87-1,184.71

Finding the Fourth Proportional to 2,128.84, 2,937.87 and 1,184.71

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Solution

The fourth proportional to 2,128.84, 2,937.87 and 1,184.71 is: 1,634.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.84 : 2,937.87 = 1,184.71 : x
  2. Step 2: Convert to fraction form
    2,128.84/2,937.87 = 1,184.71/x
  3. Step 3: Cross multiply
    2,128.84x = 2,937.87 × 1,184.71
  4. Step 4: Simplify right side
    2,128.84x = 3,480,523.97
  5. Step 5: Solve for x
    x = 3,480,523.97/2,128.84
  6. Step 6: Final answer
    x = 1,634.94

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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.