Home / 9,342-12,890.70-5,362.38

Finding the Fourth Proportional to 9,342, 12,890.70 and 5,362.38

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Solution

The fourth proportional to 9,342, 12,890.70 and 5,362.38 is: 7,399.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,342 : 12,890.70 = 5,362.38 : x
  2. Step 2: Convert to fraction form
    9,342/12,890.70 = 5,362.38/x
  3. Step 3: Cross multiply
    9,342x = 12,890.70 × 5,362.38
  4. Step 4: Simplify right side
    9,342x = 69,124,831.87
  5. Step 5: Solve for x
    x = 69,124,831.87/9,342
  6. Step 6: Final answer
    x = 7,399.36

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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.