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Finding the Fourth Proportional to 8,560, 12,840 and 3,088

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Solution

The fourth proportional to 8,560, 12,840 and 3,088 is: 4,632

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,560 : 12,840 = 3,088 : x
  2. Step 2: Convert to fraction form
    8,560/12,840 = 3,088/x
  3. Step 3: Cross multiply
    8,560x = 12,840 × 3,088
  4. Step 4: Simplify right side
    8,560x = 39,649,920
  5. Step 5: Solve for x
    x = 39,649,920/8,560
  6. Step 6: Final answer
    x = 4,632

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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.