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Finding the Fourth Proportional to 6,603.56, 9,113.46 and 5,421.32

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Solution

The fourth proportional to 6,603.56, 9,113.46 and 5,421.32 is: 7,481.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603.56 : 9,113.46 = 5,421.32 : x
  2. Step 2: Convert to fraction form
    6,603.56/9,113.46 = 5,421.32/x
  3. Step 3: Cross multiply
    6,603.56x = 9,113.46 × 5,421.32
  4. Step 4: Simplify right side
    6,603.56x = 49,406,982.97
  5. Step 5: Solve for x
    x = 49,406,982.97/6,603.56
  6. Step 6: Final answer
    x = 7,481.87

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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.