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Finding the Fourth Proportional to 8,320.03, 11,468.20 and 7,240.54

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Solution

The fourth proportional to 8,320.03, 11,468.20 and 7,240.54 is: 9,980.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.03 : 11,468.20 = 7,240.54 : x
  2. Step 2: Convert to fraction form
    8,320.03/11,468.20 = 7,240.54/x
  3. Step 3: Cross multiply
    8,320.03x = 11,468.20 × 7,240.54
  4. Step 4: Simplify right side
    8,320.03x = 83,035,903.49
  5. Step 5: Solve for x
    x = 83,035,903.49/8,320.03
  6. Step 6: Final answer
    x = 9,980.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.