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Finding the Fourth Proportional to 3,801.52, 5,246.52 and 2,123.20

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Solution

The fourth proportional to 3,801.52, 5,246.52 and 2,123.20 is: 2,930.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,801.52 : 5,246.52 = 2,123.20 : x
  2. Step 2: Convert to fraction form
    3,801.52/5,246.52 = 2,123.20/x
  3. Step 3: Cross multiply
    3,801.52x = 5,246.52 × 2,123.20
  4. Step 4: Simplify right side
    3,801.52x = 11,139,411.26
  5. Step 5: Solve for x
    x = 11,139,411.26/3,801.52
  6. Step 6: Final answer
    x = 2,930.25

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Half scale
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Double scale
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Similar ratio
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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.