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Finding the Fourth Proportional to 7,009.90, 9,663.62 and 5,515.24

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Solution

The fourth proportional to 7,009.90, 9,663.62 and 5,515.24 is: 7,603.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,009.90 : 9,663.62 = 5,515.24 : x
  2. Step 2: Convert to fraction form
    7,009.90/9,663.62 = 5,515.24/x
  3. Step 3: Cross multiply
    7,009.90x = 9,663.62 × 5,515.24
  4. Step 4: Simplify right side
    7,009.90x = 53,297,183.57
  5. Step 5: Solve for x
    x = 53,297,183.57/7,009.90
  6. Step 6: Final answer
    x = 7,603.13

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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.