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Finding the Fourth Proportional to 7,901.12, 11,859.12 and 4,008.32

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Solution

The fourth proportional to 7,901.12, 11,859.12 and 4,008.32 is: 6,016.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,901.12 : 11,859.12 = 4,008.32 : x
  2. Step 2: Convert to fraction form
    7,901.12/11,859.12 = 4,008.32/x
  3. Step 3: Cross multiply
    7,901.12x = 11,859.12 × 4,008.32
  4. Step 4: Simplify right side
    7,901.12x = 47,535,147.88
  5. Step 5: Solve for x
    x = 47,535,147.88/7,901.12
  6. Step 6: Final answer
    x = 6,016.25

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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.