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Finding the Fourth Proportional to 9,311.88, 12,845.44 and 7,070.04

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Solution

The fourth proportional to 9,311.88, 12,845.44 and 7,070.04 is: 9,752.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,311.88 : 12,845.44 = 7,070.04 : x
  2. Step 2: Convert to fraction form
    9,311.88/12,845.44 = 7,070.04/x
  3. Step 3: Cross multiply
    9,311.88x = 12,845.44 × 7,070.04
  4. Step 4: Simplify right side
    9,311.88x = 90,817,774.62
  5. Step 5: Solve for x
    x = 90,817,774.62/9,311.88
  6. Step 6: Final answer
    x = 9,752.89

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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.