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Finding the Fourth Proportional to 8,560.88, 12,840.29 and 2,320.50

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Solution

The fourth proportional to 8,560.88, 12,840.29 and 2,320.50 is: 3,480.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,560.88 : 12,840.29 = 2,320.50 : x
  2. Step 2: Convert to fraction form
    8,560.88/12,840.29 = 2,320.50/x
  3. Step 3: Cross multiply
    8,560.88x = 12,840.29 × 2,320.50
  4. Step 4: Simplify right side
    8,560.88x = 29,795,881.34
  5. Step 5: Solve for x
    x = 29,795,881.34/8,560.88
  6. Step 6: Final answer
    x = 3,480.47

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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.