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Finding the Fourth Proportional to 6,868.10, 10,291.15 and 6,685.86

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Solution

The fourth proportional to 6,868.10, 10,291.15 and 6,685.86 is: 10,018.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,868.10 : 10,291.15 = 6,685.86 : x
  2. Step 2: Convert to fraction form
    6,868.10/10,291.15 = 6,685.86/x
  3. Step 3: Cross multiply
    6,868.10x = 10,291.15 × 6,685.86
  4. Step 4: Simplify right side
    6,868.10x = 68,805,188.14
  5. Step 5: Solve for x
    x = 68,805,188.14/6,868.10
  6. Step 6: Final answer
    x = 10,018.08

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1.5x scale

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.