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Finding the Fourth Proportional to 6,752.84, 9,318.98 and 3,920.81

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Solution

The fourth proportional to 6,752.84, 9,318.98 and 3,920.81 is: 5,410.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,752.84 : 9,318.98 = 3,920.81 : x
  2. Step 2: Convert to fraction form
    6,752.84/9,318.98 = 3,920.81/x
  3. Step 3: Cross multiply
    6,752.84x = 9,318.98 × 3,920.81
  4. Step 4: Simplify right side
    6,752.84x = 36,537,913.18
  5. Step 5: Solve for x
    x = 36,537,913.18/6,752.84
  6. Step 6: Final answer
    x = 5,410.75

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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.