Home / 7,720.11-11,523.67-6,631.47

Finding the Fourth Proportional to 7,720.11, 11,523.67 and 6,631.47

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Solution

The fourth proportional to 7,720.11, 11,523.67 and 6,631.47 is: 9,898.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.11 : 11,523.67 = 6,631.47 : x
  2. Step 2: Convert to fraction form
    7,720.11/11,523.67 = 6,631.47/x
  3. Step 3: Cross multiply
    7,720.11x = 11,523.67 × 6,631.47
  4. Step 4: Simplify right side
    7,720.11x = 76,418,855.32
  5. Step 5: Solve for x
    x = 76,418,855.32/7,720.11
  6. Step 6: Final answer
    x = 9,898.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.