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Finding the Fourth Proportional to 6,607.80, 9,109.44 and 6,432.84

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Solution

The fourth proportional to 6,607.80, 9,109.44 and 6,432.84 is: 8,868.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,607.80 : 9,109.44 = 6,432.84 : x
  2. Step 2: Convert to fraction form
    6,607.80/9,109.44 = 6,432.84/x
  3. Step 3: Cross multiply
    6,607.80x = 9,109.44 × 6,432.84
  4. Step 4: Simplify right side
    6,607.80x = 58,599,570.01
  5. Step 5: Solve for x
    x = 58,599,570.01/6,607.80
  6. Step 6: Final answer
    x = 8,868.24

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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.