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Finding the Fourth Proportional to 7,081.70, 10,622.57 and 1,887.57

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Solution

The fourth proportional to 7,081.70, 10,622.57 and 1,887.57 is: 2,831.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.70 : 10,622.57 = 1,887.57 : x
  2. Step 2: Convert to fraction form
    7,081.70/10,622.57 = 1,887.57/x
  3. Step 3: Cross multiply
    7,081.70x = 10,622.57 × 1,887.57
  4. Step 4: Simplify right side
    7,081.70x = 20,050,835.02
  5. Step 5: Solve for x
    x = 20,050,835.02/7,081.70
  6. Step 6: Final answer
    x = 2,831.36

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Double scale
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Similar ratio
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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.