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Finding the Fourth Proportional to 7,868.86, 11,803.26 and 5,396.18

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Solution

The fourth proportional to 7,868.86, 11,803.26 and 5,396.18 is: 8,094.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868.86 : 11,803.26 = 5,396.18 : x
  2. Step 2: Convert to fraction form
    7,868.86/11,803.26 = 5,396.18/x
  3. Step 3: Cross multiply
    7,868.86x = 11,803.26 × 5,396.18
  4. Step 4: Simplify right side
    7,868.86x = 63,692,515.55
  5. Step 5: Solve for x
    x = 63,692,515.55/7,868.86
  6. Step 6: Final answer
    x = 8,094.25

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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.