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Finding the Fourth Proportional to 7,855.59, 11,762.28 and 6,859.02

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Solution

The fourth proportional to 7,855.59, 11,762.28 and 6,859.02 is: 10,270.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.59 : 11,762.28 = 6,859.02 : x
  2. Step 2: Convert to fraction form
    7,855.59/11,762.28 = 6,859.02/x
  3. Step 3: Cross multiply
    7,855.59x = 11,762.28 × 6,859.02
  4. Step 4: Simplify right side
    7,855.59x = 80,677,713.77
  5. Step 5: Solve for x
    x = 80,677,713.77/7,855.59
  6. Step 6: Final answer
    x = 10,270.10

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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.