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Finding the Fourth Proportional to 6,888.72, 10,332.16 and 1,958.80

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Solution

The fourth proportional to 6,888.72, 10,332.16 and 1,958.80 is: 2,937.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,888.72 : 10,332.16 = 1,958.80 : x
  2. Step 2: Convert to fraction form
    6,888.72/10,332.16 = 1,958.80/x
  3. Step 3: Cross multiply
    6,888.72x = 10,332.16 × 1,958.80
  4. Step 4: Simplify right side
    6,888.72x = 20,238,635.01
  5. Step 5: Solve for x
    x = 20,238,635.01/6,888.72
  6. Step 6: Final answer
    x = 2,937.94

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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.