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Finding the Fourth Proportional to 6,591.43, 9,887.15 and 1,661.12

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Solution

The fourth proportional to 6,591.43, 9,887.15 and 1,661.12 is: 2,491.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,591.43 : 9,887.15 = 1,661.12 : x
  2. Step 2: Convert to fraction form
    6,591.43/9,887.15 = 1,661.12/x
  3. Step 3: Cross multiply
    6,591.43x = 9,887.15 × 1,661.12
  4. Step 4: Simplify right side
    6,591.43x = 16,423,684.87
  5. Step 5: Solve for x
    x = 16,423,684.87/6,591.43
  6. Step 6: Final answer
    x = 2,491.67

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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.