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Finding the Fourth Proportional to 8,868.15, 12,237.08 and 7,099.11

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Solution

The fourth proportional to 8,868.15, 12,237.08 and 7,099.11 is: 9,795.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.15 : 12,237.08 = 7,099.11 : x
  2. Step 2: Convert to fraction form
    8,868.15/12,237.08 = 7,099.11/x
  3. Step 3: Cross multiply
    8,868.15x = 12,237.08 × 7,099.11
  4. Step 4: Simplify right side
    8,868.15x = 86,872,341.50
  5. Step 5: Solve for x
    x = 86,872,341.50/8,868.15
  6. Step 6: Final answer
    x = 9,795.99

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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.