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Finding the Fourth Proportional to 7,603.05, 11,301.96 and 7,378.81

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Solution

The fourth proportional to 7,603.05, 11,301.96 and 7,378.81 is: 10,968.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,603.05 : 11,301.96 = 7,378.81 : x
  2. Step 2: Convert to fraction form
    7,603.05/11,301.96 = 7,378.81/x
  3. Step 3: Cross multiply
    7,603.05x = 11,301.96 × 7,378.81
  4. Step 4: Simplify right side
    7,603.05x = 83,395,015.47
  5. Step 5: Solve for x
    x = 83,395,015.47/7,603.05
  6. Step 6: Final answer
    x = 10,968.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.