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Finding the Fourth Proportional to 8,911.34, 13,380.50 and 7,077.32

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Solution

The fourth proportional to 8,911.34, 13,380.50 and 7,077.32 is: 10,626.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.34 : 13,380.50 = 7,077.32 : x
  2. Step 2: Convert to fraction form
    8,911.34/13,380.50 = 7,077.32/x
  3. Step 3: Cross multiply
    8,911.34x = 13,380.50 × 7,077.32
  4. Step 4: Simplify right side
    8,911.34x = 94,698,080.26
  5. Step 5: Solve for x
    x = 94,698,080.26/8,911.34
  6. Step 6: Final answer
    x = 10,626.69

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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.