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Finding the Fourth Proportional to 2,714.08, 3,743.04 and 2,123.60

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Solution

The fourth proportional to 2,714.08, 3,743.04 and 2,123.60 is: 2,928.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,714.08 : 3,743.04 = 2,123.60 : x
  2. Step 2: Convert to fraction form
    2,714.08/3,743.04 = 2,123.60/x
  3. Step 3: Cross multiply
    2,714.08x = 3,743.04 × 2,123.60
  4. Step 4: Simplify right side
    2,714.08x = 7,948,719.74
  5. Step 5: Solve for x
    x = 7,948,719.74/2,714.08
  6. Step 6: Final answer
    x = 2,928.70

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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.