Home / 5,831.40-8,047.23-3,178.80

Finding the Fourth Proportional to 5,831.40, 8,047.23 and 3,178.80

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Solution

The fourth proportional to 5,831.40, 8,047.23 and 3,178.80 is: 4,386.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,831.40 : 8,047.23 = 3,178.80 : x
  2. Step 2: Convert to fraction form
    5,831.40/8,047.23 = 3,178.80/x
  3. Step 3: Cross multiply
    5,831.40x = 8,047.23 × 3,178.80
  4. Step 4: Simplify right side
    5,831.40x = 25,580,534.72
  5. Step 5: Solve for x
    x = 25,580,534.72/5,831.40
  6. Step 6: Final answer
    x = 4,386.69

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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.