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Finding the Fourth Proportional to 9,434.70, 12,985.52 and 8,308.26

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Solution

The fourth proportional to 9,434.70, 12,985.52 and 8,308.26 is: 11,435.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,434.70 : 12,985.52 = 8,308.26 : x
  2. Step 2: Convert to fraction form
    9,434.70/12,985.52 = 8,308.26/x
  3. Step 3: Cross multiply
    9,434.70x = 12,985.52 × 8,308.26
  4. Step 4: Simplify right side
    9,434.70x = 107,887,034.85
  5. Step 5: Solve for x
    x = 107,887,034.85/9,434.70
  6. Step 6: Final answer
    x = 11,435.13

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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.