Home / 8,831.90-13,243.56-5,135.20

Finding the Fourth Proportional to 8,831.90, 13,243.56 and 5,135.20

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Solution

The fourth proportional to 8,831.90, 13,243.56 and 5,135.20 is: 7,700.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,831.90 : 13,243.56 = 5,135.20 : x
  2. Step 2: Convert to fraction form
    8,831.90/13,243.56 = 5,135.20/x
  3. Step 3: Cross multiply
    8,831.90x = 13,243.56 × 5,135.20
  4. Step 4: Simplify right side
    8,831.90x = 68,008,329.31
  5. Step 5: Solve for x
    x = 68,008,329.31/8,831.90
  6. Step 6: Final answer
    x = 7,700.31

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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.