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Finding the Fourth Proportional to 7,678.84, 11,504.28 and 5,333.89

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Solution

The fourth proportional to 7,678.84, 11,504.28 and 5,333.89 is: 7,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.84 : 11,504.28 = 5,333.89 : x
  2. Step 2: Convert to fraction form
    7,678.84/11,504.28 = 5,333.89/x
  3. Step 3: Cross multiply
    7,678.84x = 11,504.28 × 5,333.89
  4. Step 4: Simplify right side
    7,678.84x = 61,362,506.53
  5. Step 5: Solve for x
    x = 61,362,506.53/7,678.84
  6. Step 6: Final answer
    x = 7,991.12

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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.