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Finding the Fourth Proportional to 4,578.73, 6,868.10 and 1,291.40

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Solution

The fourth proportional to 4,578.73, 6,868.10 and 1,291.40 is: 1,937.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,578.73 : 6,868.10 = 1,291.40 : x
  2. Step 2: Convert to fraction form
    4,578.73/6,868.10 = 1,291.40/x
  3. Step 3: Cross multiply
    4,578.73x = 6,868.10 × 1,291.40
  4. Step 4: Simplify right side
    4,578.73x = 8,869,464.34
  5. Step 5: Solve for x
    x = 8,869,464.34/4,578.73
  6. Step 6: Final answer
    x = 1,937.10

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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.