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Finding the Fourth Proportional to 8,860.66, 12,240.93 and 7,156.62

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Solution

The fourth proportional to 8,860.66, 12,240.93 and 7,156.62 is: 9,886.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860.66 : 12,240.93 = 7,156.62 : x
  2. Step 2: Convert to fraction form
    8,860.66/12,240.93 = 7,156.62/x
  3. Step 3: Cross multiply
    8,860.66x = 12,240.93 × 7,156.62
  4. Step 4: Simplify right side
    8,860.66x = 87,603,684.46
  5. Step 5: Solve for x
    x = 87,603,684.46/8,860.66
  6. Step 6: Final answer
    x = 9,886.81

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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.