Home / 9,679.39-13,357.56-5,487.64

Finding the Fourth Proportional to 9,679.39, 13,357.56 and 5,487.64

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Solution

The fourth proportional to 9,679.39, 13,357.56 and 5,487.64 is: 7,572.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,679.39 : 13,357.56 = 5,487.64 : x
  2. Step 2: Convert to fraction form
    9,679.39/13,357.56 = 5,487.64/x
  3. Step 3: Cross multiply
    9,679.39x = 13,357.56 × 5,487.64
  4. Step 4: Simplify right side
    9,679.39x = 73,301,480.56
  5. Step 5: Solve for x
    x = 73,301,480.56/9,679.39
  6. Step 6: Final answer
    x = 7,572.94

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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.