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Finding the Fourth Proportional to 6,617.11, 9,928.10 and 4,770.31

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Solution

The fourth proportional to 6,617.11, 9,928.10 and 4,770.31 is: 7,157.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,617.11 : 9,928.10 = 4,770.31 : x
  2. Step 2: Convert to fraction form
    6,617.11/9,928.10 = 4,770.31/x
  3. Step 3: Cross multiply
    6,617.11x = 9,928.10 × 4,770.31
  4. Step 4: Simplify right side
    6,617.11x = 47,360,114.71
  5. Step 5: Solve for x
    x = 47,360,114.71/6,617.11
  6. Step 6: Final answer
    x = 7,157.22

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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.