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Finding the Fourth Proportional to 8,945.90, 13,404.45 and 7,477.10

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Solution

The fourth proportional to 8,945.90, 13,404.45 and 7,477.10 is: 11,203.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,945.90 : 13,404.45 = 7,477.10 : x
  2. Step 2: Convert to fraction form
    8,945.90/13,404.45 = 7,477.10/x
  3. Step 3: Cross multiply
    8,945.90x = 13,404.45 × 7,477.10
  4. Step 4: Simplify right side
    8,945.90x = 100,226,413.10
  5. Step 5: Solve for x
    x = 100,226,413.10/8,945.90
  6. Step 6: Final answer
    x = 11,203.61

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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.