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Finding the Fourth Proportional to 4,678.74, 6,983.82 and 4,125.12

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Solution

The fourth proportional to 4,678.74, 6,983.82 and 4,125.12 is: 6,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.74 : 6,983.82 = 4,125.12 : x
  2. Step 2: Convert to fraction form
    4,678.74/6,983.82 = 4,125.12/x
  3. Step 3: Cross multiply
    4,678.74x = 6,983.82 × 4,125.12
  4. Step 4: Simplify right side
    4,678.74x = 28,809,095.56
  5. Step 5: Solve for x
    x = 28,809,095.56/4,678.74
  6. Step 6: Final answer
    x = 6,157.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.