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Finding the Fourth Proportional to 7,899.66, 11,859.21 and 7,491.42

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Solution

The fourth proportional to 7,899.66, 11,859.21 and 7,491.42 is: 11,246.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.66 : 11,859.21 = 7,491.42 : x
  2. Step 2: Convert to fraction form
    7,899.66/11,859.21 = 7,491.42/x
  3. Step 3: Cross multiply
    7,899.66x = 11,859.21 × 7,491.42
  4. Step 4: Simplify right side
    7,899.66x = 88,842,322.98
  5. Step 5: Solve for x
    x = 88,842,322.98/7,899.66
  6. Step 6: Final answer
    x = 11,246.35

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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.