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Finding the Fourth Proportional to 7,064.64, 9,749.07 and 3,878.01

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Solution

The fourth proportional to 7,064.64, 9,749.07 and 3,878.01 is: 5,351.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,064.64 : 9,749.07 = 3,878.01 : x
  2. Step 2: Convert to fraction form
    7,064.64/9,749.07 = 3,878.01/x
  3. Step 3: Cross multiply
    7,064.64x = 9,749.07 × 3,878.01
  4. Step 4: Simplify right side
    7,064.64x = 37,806,990.95
  5. Step 5: Solve for x
    x = 37,806,990.95/7,064.64
  6. Step 6: Final answer
    x = 5,351.58

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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.