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Finding the Fourth Proportional to 9,318, 12,859.44 and 5,339.52

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Solution

The fourth proportional to 9,318, 12,859.44 and 5,339.52 is: 7,368.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318 : 12,859.44 = 5,339.52 : x
  2. Step 2: Convert to fraction form
    9,318/12,859.44 = 5,339.52/x
  3. Step 3: Cross multiply
    9,318x = 12,859.44 × 5,339.52
  4. Step 4: Simplify right side
    9,318x = 68,663,237.07
  5. Step 5: Solve for x
    x = 68,663,237.07/9,318
  6. Step 6: Final answer
    x = 7,368.88

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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.