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Finding the Fourth Proportional to 6,368.68, 8,788.50 and 3,851.40

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Solution

The fourth proportional to 6,368.68, 8,788.50 and 3,851.40 is: 5,314.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,368.68 : 8,788.50 = 3,851.40 : x
  2. Step 2: Convert to fraction form
    6,368.68/8,788.50 = 3,851.40/x
  3. Step 3: Cross multiply
    6,368.68x = 8,788.50 × 3,851.40
  4. Step 4: Simplify right side
    6,368.68x = 33,848,028.90
  5. Step 5: Solve for x
    x = 33,848,028.90/6,368.68
  6. Step 6: Final answer
    x = 5,314.76

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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.