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Finding the Fourth Proportional to 6,620.67, 9,139.10 and 4,495.10

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Solution

The fourth proportional to 6,620.67, 9,139.10 and 4,495.10 is: 6,204.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.67 : 9,139.10 = 4,495.10 : x
  2. Step 2: Convert to fraction form
    6,620.67/9,139.10 = 4,495.10/x
  3. Step 3: Cross multiply
    6,620.67x = 9,139.10 × 4,495.10
  4. Step 4: Simplify right side
    6,620.67x = 41,081,100.24
  5. Step 5: Solve for x
    x = 41,081,100.24/6,620.67
  6. Step 6: Final answer
    x = 6,204.98

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1.5x scale

Why These Related Problems?

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