Home / 8,118.75-12,205.92-7,510.03

Finding the Fourth Proportional to 8,118.75, 12,205.92 and 7,510.03

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Solution

The fourth proportional to 8,118.75, 12,205.92 and 7,510.03 is: 11,290.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.75 : 12,205.92 = 7,510.03 : x
  2. Step 2: Convert to fraction form
    8,118.75/12,205.92 = 7,510.03/x
  3. Step 3: Cross multiply
    8,118.75x = 12,205.92 × 7,510.03
  4. Step 4: Simplify right side
    8,118.75x = 91,666,828.32
  5. Step 5: Solve for x
    x = 91,666,828.32/8,118.75
  6. Step 6: Final answer
    x = 11,290.76

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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.