Home / 7,831.48-10,806.30-4,687

Finding the Fourth Proportional to 7,831.48, 10,806.30 and 4,687

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Solution

The fourth proportional to 7,831.48, 10,806.30 and 4,687 is: 6,467.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.48 : 10,806.30 = 4,687 : x
  2. Step 2: Convert to fraction form
    7,831.48/10,806.30 = 4,687/x
  3. Step 3: Cross multiply
    7,831.48x = 10,806.30 × 4,687
  4. Step 4: Simplify right side
    7,831.48x = 50,649,128.10
  5. Step 5: Solve for x
    x = 50,649,128.10/7,831.48
  6. Step 6: Final answer
    x = 6,467.38

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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.