Home / 3,957.79-5,461.56-2,279.26

Finding the Fourth Proportional to 3,957.79, 5,461.56 and 2,279.26

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Solution

The fourth proportional to 3,957.79, 5,461.56 and 2,279.26 is: 3,145.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.79 : 5,461.56 = 2,279.26 : x
  2. Step 2: Convert to fraction form
    3,957.79/5,461.56 = 2,279.26/x
  3. Step 3: Cross multiply
    3,957.79x = 5,461.56 × 2,279.26
  4. Step 4: Simplify right side
    3,957.79x = 12,448,343.44
  5. Step 5: Solve for x
    x = 12,448,343.44/3,957.79
  6. Step 6: Final answer
    x = 3,145.28

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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.