Home / 2,792.55-3,853.95-2,128.26

Finding the Fourth Proportional to 2,792.55, 3,853.95 and 2,128.26

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Solution

The fourth proportional to 2,792.55, 3,853.95 and 2,128.26 is: 2,937.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,792.55 : 3,853.95 = 2,128.26 : x
  2. Step 2: Convert to fraction form
    2,792.55/3,853.95 = 2,128.26/x
  3. Step 3: Cross multiply
    2,792.55x = 3,853.95 × 2,128.26
  4. Step 4: Simplify right side
    2,792.55x = 8,202,207.63
  5. Step 5: Solve for x
    x = 8,202,207.63/2,792.55
  6. Step 6: Final answer
    x = 2,937.17

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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.