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Finding the Fourth Proportional to 6,268.96, 8,657.28 and 4,787.20

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Solution

The fourth proportional to 6,268.96, 8,657.28 and 4,787.20 is: 6,611.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,268.96 : 8,657.28 = 4,787.20 : x
  2. Step 2: Convert to fraction form
    6,268.96/8,657.28 = 4,787.20/x
  3. Step 3: Cross multiply
    6,268.96x = 8,657.28 × 4,787.20
  4. Step 4: Simplify right side
    6,268.96x = 41,444,130.82
  5. Step 5: Solve for x
    x = 41,444,130.82/6,268.96
  6. Step 6: Final answer
    x = 6,611.01

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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.