Home / 8,311.14-11,465.98-5,328.72

Finding the Fourth Proportional to 8,311.14, 11,465.98 and 5,328.72

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Solution

The fourth proportional to 8,311.14, 11,465.98 and 5,328.72 is: 7,351.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.14 : 11,465.98 = 5,328.72 : x
  2. Step 2: Convert to fraction form
    8,311.14/11,465.98 = 5,328.72/x
  3. Step 3: Cross multiply
    8,311.14x = 11,465.98 × 5,328.72
  4. Step 4: Simplify right side
    8,311.14x = 61,098,996.95
  5. Step 5: Solve for x
    x = 61,098,996.95/8,311.14
  6. Step 6: Final answer
    x = 7,351.46

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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.