Home / 7,157.42-9,876.30-4,172.84

Finding the Fourth Proportional to 7,157.42, 9,876.30 and 4,172.84

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Solution

The fourth proportional to 7,157.42, 9,876.30 and 4,172.84 is: 5,757.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.42 : 9,876.30 = 4,172.84 : x
  2. Step 2: Convert to fraction form
    7,157.42/9,876.30 = 4,172.84/x
  3. Step 3: Cross multiply
    7,157.42x = 9,876.30 × 4,172.84
  4. Step 4: Simplify right side
    7,157.42x = 41,212,219.69
  5. Step 5: Solve for x
    x = 41,212,219.69/7,157.42
  6. Step 6: Final answer
    x = 5,757.97

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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.