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Finding the Fourth Proportional to 6,631.60, 9,151.16 and 3,798.99

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Solution

The fourth proportional to 6,631.60, 9,151.16 and 3,798.99 is: 5,242.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,631.60 : 9,151.16 = 3,798.99 : x
  2. Step 2: Convert to fraction form
    6,631.60/9,151.16 = 3,798.99/x
  3. Step 3: Cross multiply
    6,631.60x = 9,151.16 × 3,798.99
  4. Step 4: Simplify right side
    6,631.60x = 34,765,119.57
  5. Step 5: Solve for x
    x = 34,765,119.57/6,631.60
  6. Step 6: Final answer
    x = 5,242.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.