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Finding the Fourth Proportional to 9,470, 13,068.68 and 5,279.12

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Solution

The fourth proportional to 9,470, 13,068.68 and 5,279.12 is: 7,285.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,470 : 13,068.68 = 5,279.12 : x
  2. Step 2: Convert to fraction form
    9,470/13,068.68 = 5,279.12/x
  3. Step 3: Cross multiply
    9,470x = 13,068.68 × 5,279.12
  4. Step 4: Simplify right side
    9,470x = 68,991,129.96
  5. Step 5: Solve for x
    x = 68,991,129.96/9,470
  6. Step 6: Final answer
    x = 7,285.23

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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.