Home / 9,368.43-12,928.38-5,390.33

Finding the Fourth Proportional to 9,368.43, 12,928.38 and 5,390.33

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Solution

The fourth proportional to 9,368.43, 12,928.38 and 5,390.33 is: 7,438.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,368.43 : 12,928.38 = 5,390.33 : x
  2. Step 2: Convert to fraction form
    9,368.43/12,928.38 = 5,390.33/x
  3. Step 3: Cross multiply
    9,368.43x = 12,928.38 × 5,390.33
  4. Step 4: Simplify right side
    9,368.43x = 69,688,169.92
  5. Step 5: Solve for x
    x = 69,688,169.92/9,368.43
  6. Step 6: Final answer
    x = 7,438.62

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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.