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Finding the Fourth Proportional to 6,610.70, 9,913.48 and 3,321.50

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Solution

The fourth proportional to 6,610.70, 9,913.48 and 3,321.50 is: 4,980.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,610.70 : 9,913.48 = 3,321.50 : x
  2. Step 2: Convert to fraction form
    6,610.70/9,913.48 = 3,321.50/x
  3. Step 3: Cross multiply
    6,610.70x = 9,913.48 × 3,321.50
  4. Step 4: Simplify right side
    6,610.70x = 32,927,607.21
  5. Step 5: Solve for x
    x = 32,927,607.21/6,610.70
  6. Step 6: Final answer
    x = 4,980.96

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1.5x scale

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.