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Finding the Fourth Proportional to 7,545.60, 11,273.73 and 7,287.21

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Solution

The fourth proportional to 7,545.60, 11,273.73 and 7,287.21 is: 10,887.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,545.60 : 11,273.73 = 7,287.21 : x
  2. Step 2: Convert to fraction form
    7,545.60/11,273.73 = 7,287.21/x
  3. Step 3: Cross multiply
    7,545.60x = 11,273.73 × 7,287.21
  4. Step 4: Simplify right side
    7,545.60x = 82,154,037.99
  5. Step 5: Solve for x
    x = 82,154,037.99/7,545.60
  6. Step 6: Final answer
    x = 10,887.67

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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.