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Finding the Fourth Proportional to 8,907.04, 13,285.32 and 8,393.12

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Solution

The fourth proportional to 8,907.04, 13,285.32 and 8,393.12 is: 12,518.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.04 : 13,285.32 = 8,393.12 : x
  2. Step 2: Convert to fraction form
    8,907.04/13,285.32 = 8,393.12/x
  3. Step 3: Cross multiply
    8,907.04x = 13,285.32 × 8,393.12
  4. Step 4: Simplify right side
    8,907.04x = 111,505,285.00
  5. Step 5: Solve for x
    x = 111,505,285.00/8,907.04
  6. Step 6: Final answer
    x = 12,518.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.