Home / 5,220.40-7,831.78-1,522.52

Finding the Fourth Proportional to 5,220.40, 7,831.78 and 1,522.52

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Solution

The fourth proportional to 5,220.40, 7,831.78 and 1,522.52 is: 2,284.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.40 : 7,831.78 = 1,522.52 : x
  2. Step 2: Convert to fraction form
    5,220.40/7,831.78 = 1,522.52/x
  3. Step 3: Cross multiply
    5,220.40x = 7,831.78 × 1,522.52
  4. Step 4: Simplify right side
    5,220.40x = 11,924,041.69
  5. Step 5: Solve for x
    x = 11,924,041.69/5,220.40
  6. Step 6: Final answer
    x = 2,284.12

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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.