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Finding the Fourth Proportional to 9,316.70, 13,979.10 and 4,699.70

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Solution

The fourth proportional to 9,316.70, 13,979.10 and 4,699.70 is: 7,051.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,316.70 : 13,979.10 = 4,699.70 : x
  2. Step 2: Convert to fraction form
    9,316.70/13,979.10 = 4,699.70/x
  3. Step 3: Cross multiply
    9,316.70x = 13,979.10 × 4,699.70
  4. Step 4: Simplify right side
    9,316.70x = 65,697,576.27
  5. Step 5: Solve for x
    x = 65,697,576.27/9,316.70
  6. Step 6: Final answer
    x = 7,051.59

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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.