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Finding the Fourth Proportional to 5,801.20, 8,701.80 and 1,905.10

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Solution

The fourth proportional to 5,801.20, 8,701.80 and 1,905.10 is: 2,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,801.20 : 8,701.80 = 1,905.10 : x
  2. Step 2: Convert to fraction form
    5,801.20/8,701.80 = 1,905.10/x
  3. Step 3: Cross multiply
    5,801.20x = 8,701.80 × 1,905.10
  4. Step 4: Simplify right side
    5,801.20x = 16,577,799.18
  5. Step 5: Solve for x
    x = 16,577,799.18/5,801.20
  6. Step 6: Final answer
    x = 2,857.65

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.