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Finding the Fourth Proportional to 5,252.76, 7,878.78 and 1,357.02

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Solution

The fourth proportional to 5,252.76, 7,878.78 and 1,357.02 is: 2,035.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,252.76 : 7,878.78 = 1,357.02 : x
  2. Step 2: Convert to fraction form
    5,252.76/7,878.78 = 1,357.02/x
  3. Step 3: Cross multiply
    5,252.76x = 7,878.78 × 1,357.02
  4. Step 4: Simplify right side
    5,252.76x = 10,691,662.04
  5. Step 5: Solve for x
    x = 10,691,662.04/5,252.76
  6. Step 6: Final answer
    x = 2,035.44

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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.