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Finding the Fourth Proportional to 8,787.51, 12,121.52 and 7,606.53

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Solution

The fourth proportional to 8,787.51, 12,121.52 and 7,606.53 is: 10,492.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787.51 : 12,121.52 = 7,606.53 : x
  2. Step 2: Convert to fraction form
    8,787.51/12,121.52 = 7,606.53/x
  3. Step 3: Cross multiply
    8,787.51x = 12,121.52 × 7,606.53
  4. Step 4: Simplify right side
    8,787.51x = 92,202,667.49
  5. Step 5: Solve for x
    x = 92,202,667.49/8,787.51
  6. Step 6: Final answer
    x = 10,492.47

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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.