Home / 7,831.83-10,809.81-5,318.13

Finding the Fourth Proportional to 7,831.83, 10,809.81 and 5,318.13

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Solution

The fourth proportional to 7,831.83, 10,809.81 and 5,318.13 is: 7,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.83 : 10,809.81 = 5,318.13 : x
  2. Step 2: Convert to fraction form
    7,831.83/10,809.81 = 5,318.13/x
  3. Step 3: Cross multiply
    7,831.83x = 10,809.81 × 5,318.13
  4. Step 4: Simplify right side
    7,831.83x = 57,487,974.86
  5. Step 5: Solve for x
    x = 57,487,974.86/7,831.83
  6. Step 6: Final answer
    x = 7,340.30

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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.