Home / 7,831.28-11,747.38-3,448.17

Finding the Fourth Proportional to 7,831.28, 11,747.38 and 3,448.17

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Solution

The fourth proportional to 7,831.28, 11,747.38 and 3,448.17 is: 5,172.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.28 : 11,747.38 = 3,448.17 : x
  2. Step 2: Convert to fraction form
    7,831.28/11,747.38 = 3,448.17/x
  3. Step 3: Cross multiply
    7,831.28x = 11,747.38 × 3,448.17
  4. Step 4: Simplify right side
    7,831.28x = 40,506,961.14
  5. Step 5: Solve for x
    x = 40,506,961.14/7,831.28
  6. Step 6: Final answer
    x = 5,172.46

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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.