Home / 9,338.87-12,887.70-5,147.12

Finding the Fourth Proportional to 9,338.87, 12,887.70 and 5,147.12

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Solution

The fourth proportional to 9,338.87, 12,887.70 and 5,147.12 is: 7,103.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,338.87 : 12,887.70 = 5,147.12 : x
  2. Step 2: Convert to fraction form
    9,338.87/12,887.70 = 5,147.12/x
  3. Step 3: Cross multiply
    9,338.87x = 12,887.70 × 5,147.12
  4. Step 4: Simplify right side
    9,338.87x = 66,334,538.42
  5. Step 5: Solve for x
    x = 66,334,538.42/9,338.87
  6. Step 6: Final answer
    x = 7,103.06

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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.