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Finding the Fourth Proportional to 8,145.90, 11,236.86 and 4,787.10

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Solution

The fourth proportional to 8,145.90, 11,236.86 and 4,787.10 is: 6,603.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.90 : 11,236.86 = 4,787.10 : x
  2. Step 2: Convert to fraction form
    8,145.90/11,236.86 = 4,787.10/x
  3. Step 3: Cross multiply
    8,145.90x = 11,236.86 × 4,787.10
  4. Step 4: Simplify right side
    8,145.90x = 53,791,972.51
  5. Step 5: Solve for x
    x = 53,791,972.51/8,145.90
  6. Step 6: Final answer
    x = 6,603.56

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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.