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Finding the Fourth Proportional to 6,311.72, 9,468.93 and 1,929.50

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Solution

The fourth proportional to 6,311.72, 9,468.93 and 1,929.50 is: 2,894.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,311.72 : 9,468.93 = 1,929.50 : x
  2. Step 2: Convert to fraction form
    6,311.72/9,468.93 = 1,929.50/x
  3. Step 3: Cross multiply
    6,311.72x = 9,468.93 × 1,929.50
  4. Step 4: Simplify right side
    6,311.72x = 18,270,300.44
  5. Step 5: Solve for x
    x = 18,270,300.44/6,311.72
  6. Step 6: Final answer
    x = 2,894.66

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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.