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Finding the Fourth Proportional to 6,983.49, 9,639.78 and 4,626.39

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Solution

The fourth proportional to 6,983.49, 9,639.78 and 4,626.39 is: 6,386.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,983.49 : 9,639.78 = 4,626.39 : x
  2. Step 2: Convert to fraction form
    6,983.49/9,639.78 = 4,626.39/x
  3. Step 3: Cross multiply
    6,983.49x = 9,639.78 × 4,626.39
  4. Step 4: Simplify right side
    6,983.49x = 44,597,381.79
  5. Step 5: Solve for x
    x = 44,597,381.79/6,983.49
  6. Step 6: Final answer
    x = 6,386.12

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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.