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Finding the Fourth Proportional to 6,661.79, 9,982.35 and 4,683.90

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Solution

The fourth proportional to 6,661.79, 9,982.35 and 4,683.90 is: 7,018.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,661.79 : 9,982.35 = 4,683.90 : x
  2. Step 2: Convert to fraction form
    6,661.79/9,982.35 = 4,683.90/x
  3. Step 3: Cross multiply
    6,661.79x = 9,982.35 × 4,683.90
  4. Step 4: Simplify right side
    6,661.79x = 46,756,329.17
  5. Step 5: Solve for x
    x = 46,756,329.17/6,661.79
  6. Step 6: Final answer
    x = 7,018.59

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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.