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Finding the Fourth Proportional to 5,292.36, 7,938.99 and 5,220.38

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Solution

The fourth proportional to 5,292.36, 7,938.99 and 5,220.38 is: 7,831.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,292.36 : 7,938.99 = 5,220.38 : x
  2. Step 2: Convert to fraction form
    5,292.36/7,938.99 = 5,220.38/x
  3. Step 3: Cross multiply
    5,292.36x = 7,938.99 × 5,220.38
  4. Step 4: Simplify right side
    5,292.36x = 41,444,564.46
  5. Step 5: Solve for x
    x = 41,444,564.46/5,292.36
  6. Step 6: Final answer
    x = 7,831.02

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1.5x scale

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.