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Finding the Fourth Proportional to 7,138.99, 10,710.08 and 3,444.32

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Solution

The fourth proportional to 7,138.99, 10,710.08 and 3,444.32 is: 5,167.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.99 : 10,710.08 = 3,444.32 : x
  2. Step 2: Convert to fraction form
    7,138.99/10,710.08 = 3,444.32/x
  3. Step 3: Cross multiply
    7,138.99x = 10,710.08 × 3,444.32
  4. Step 4: Simplify right side
    7,138.99x = 36,888,942.75
  5. Step 5: Solve for x
    x = 36,888,942.75/7,138.99
  6. Step 6: Final answer
    x = 5,167.25

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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.