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Finding the Fourth Proportional to 7,866.70, 10,855.56 and 4,724.62

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Solution

The fourth proportional to 7,866.70, 10,855.56 and 4,724.62 is: 6,519.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,866.70 : 10,855.56 = 4,724.62 : x
  2. Step 2: Convert to fraction form
    7,866.70/10,855.56 = 4,724.62/x
  3. Step 3: Cross multiply
    7,866.70x = 10,855.56 × 4,724.62
  4. Step 4: Simplify right side
    7,866.70x = 51,288,395.89
  5. Step 5: Solve for x
    x = 51,288,395.89/7,866.70
  6. Step 6: Final answer
    x = 6,519.68

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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.