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Finding the Fourth Proportional to 8,019.75, 11,065.95 and 7,374.59

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Solution

The fourth proportional to 8,019.75, 11,065.95 and 7,374.59 is: 10,175.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,019.75 : 11,065.95 = 7,374.59 : x
  2. Step 2: Convert to fraction form
    8,019.75/11,065.95 = 7,374.59/x
  3. Step 3: Cross multiply
    8,019.75x = 11,065.95 × 7,374.59
  4. Step 4: Simplify right side
    8,019.75x = 81,606,779.67
  5. Step 5: Solve for x
    x = 81,606,779.67/8,019.75
  6. Step 6: Final answer
    x = 10,175.72

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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.