Home / 7,472.12-11,205.60-3,315.05

Finding the Fourth Proportional to 7,472.12, 11,205.60 and 3,315.05

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Solution

The fourth proportional to 7,472.12, 11,205.60 and 3,315.05 is: 4,971.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.12 : 11,205.60 = 3,315.05 : x
  2. Step 2: Convert to fraction form
    7,472.12/11,205.60 = 3,315.05/x
  3. Step 3: Cross multiply
    7,472.12x = 11,205.60 × 3,315.05
  4. Step 4: Simplify right side
    7,472.12x = 37,147,124.28
  5. Step 5: Solve for x
    x = 37,147,124.28/7,472.12
  6. Step 6: Final answer
    x = 4,971.43

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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.