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Finding the Fourth Proportional to 8,706.78, 12,014.19 and 5,560.74

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Solution

The fourth proportional to 8,706.78, 12,014.19 and 5,560.74 is: 7,673.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.78 : 12,014.19 = 5,560.74 : x
  2. Step 2: Convert to fraction form
    8,706.78/12,014.19 = 5,560.74/x
  3. Step 3: Cross multiply
    8,706.78x = 12,014.19 × 5,560.74
  4. Step 4: Simplify right side
    8,706.78x = 66,807,786.90
  5. Step 5: Solve for x
    x = 66,807,786.90/8,706.78
  6. Step 6: Final answer
    x = 7,673.08

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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.