Home / 5,311.61-7,328.91-3,072.66

Finding the Fourth Proportional to 5,311.61, 7,328.91 and 3,072.66

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Solution

The fourth proportional to 5,311.61, 7,328.91 and 3,072.66 is: 4,239.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.61 : 7,328.91 = 3,072.66 : x
  2. Step 2: Convert to fraction form
    5,311.61/7,328.91 = 3,072.66/x
  3. Step 3: Cross multiply
    5,311.61x = 7,328.91 × 3,072.66
  4. Step 4: Simplify right side
    5,311.61x = 22,519,248.60
  5. Step 5: Solve for x
    x = 22,519,248.60/5,311.61
  6. Step 6: Final answer
    x = 4,239.63

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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.