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Finding the Fourth Proportional to 7,737.91, 10,678.22 and 4,380.64

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Solution

The fourth proportional to 7,737.91, 10,678.22 and 4,380.64 is: 6,045.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,737.91 : 10,678.22 = 4,380.64 : x
  2. Step 2: Convert to fraction form
    7,737.91/10,678.22 = 4,380.64/x
  3. Step 3: Cross multiply
    7,737.91x = 10,678.22 × 4,380.64
  4. Step 4: Simplify right side
    7,737.91x = 46,777,409.08
  5. Step 5: Solve for x
    x = 46,777,409.08/7,737.91
  6. Step 6: Final answer
    x = 6,045.22

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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.