Home / 5,831.36-8,047.45-3,178.81

Finding the Fourth Proportional to 5,831.36, 8,047.45 and 3,178.81

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Solution

The fourth proportional to 5,831.36, 8,047.45 and 3,178.81 is: 4,386.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,831.36 : 8,047.45 = 3,178.81 : x
  2. Step 2: Convert to fraction form
    5,831.36/8,047.45 = 3,178.81/x
  3. Step 3: Cross multiply
    5,831.36x = 8,047.45 × 3,178.81
  4. Step 4: Simplify right side
    5,831.36x = 25,581,328.57
  5. Step 5: Solve for x
    x = 25,581,328.57/5,831.36
  6. Step 6: Final answer
    x = 4,386.86

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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.