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Finding the Fourth Proportional to 9,358.67, 12,914.93 and 5,109.68

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Solution

The fourth proportional to 9,358.67, 12,914.93 and 5,109.68 is: 7,051.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,358.67 : 12,914.93 = 5,109.68 : x
  2. Step 2: Convert to fraction form
    9,358.67/12,914.93 = 5,109.68/x
  3. Step 3: Cross multiply
    9,358.67x = 12,914.93 × 5,109.68
  4. Step 4: Simplify right side
    9,358.67x = 65,991,069.40
  5. Step 5: Solve for x
    x = 65,991,069.40/9,358.67
  6. Step 6: Final answer
    x = 7,051.33

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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.