Home / 7,507.10-11,266.41-7,121.67

Finding the Fourth Proportional to 7,507.10, 11,266.41 and 7,121.67

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Solution

The fourth proportional to 7,507.10, 11,266.41 and 7,121.67 is: 10,687.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,507.10 : 11,266.41 = 7,121.67 : x
  2. Step 2: Convert to fraction form
    7,507.10/11,266.41 = 7,121.67/x
  3. Step 3: Cross multiply
    7,507.10x = 11,266.41 × 7,121.67
  4. Step 4: Simplify right side
    7,507.10x = 80,235,654.10
  5. Step 5: Solve for x
    x = 80,235,654.10/7,507.10
  6. Step 6: Final answer
    x = 10,687.98

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Double scale
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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.