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Finding the Fourth Proportional to 7,958.98, 10,980.12 and 5,125.87

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Solution

The fourth proportional to 7,958.98, 10,980.12 and 5,125.87 is: 7,071.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,958.98 : 10,980.12 = 5,125.87 : x
  2. Step 2: Convert to fraction form
    7,958.98/10,980.12 = 5,125.87/x
  3. Step 3: Cross multiply
    7,958.98x = 10,980.12 × 5,125.87
  4. Step 4: Simplify right side
    7,958.98x = 56,282,667.70
  5. Step 5: Solve for x
    x = 56,282,667.70/7,958.98
  6. Step 6: Final answer
    x = 7,071.59

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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.