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Finding the Fourth Proportional to 7,015.59, 10,505.07 and 6,807.78

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Solution

The fourth proportional to 7,015.59, 10,505.07 and 6,807.78 is: 10,193.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.59 : 10,505.07 = 6,807.78 : x
  2. Step 2: Convert to fraction form
    7,015.59/10,505.07 = 6,807.78/x
  3. Step 3: Cross multiply
    7,015.59x = 10,505.07 × 6,807.78
  4. Step 4: Simplify right side
    7,015.59x = 71,516,205.44
  5. Step 5: Solve for x
    x = 71,516,205.44/7,015.59
  6. Step 6: Final answer
    x = 10,193.90

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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.