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Finding the Fourth Proportional to 7,678.89, 11,540.01 and 4,559.49

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Solution

The fourth proportional to 7,678.89, 11,540.01 and 4,559.49 is: 6,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.89 : 11,540.01 = 4,559.49 : x
  2. Step 2: Convert to fraction form
    7,678.89/11,540.01 = 4,559.49/x
  3. Step 3: Cross multiply
    7,678.89x = 11,540.01 × 4,559.49
  4. Step 4: Simplify right side
    7,678.89x = 52,616,560.19
  5. Step 5: Solve for x
    x = 52,616,560.19/7,678.89
  6. Step 6: Final answer
    x = 6,852.10

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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.