Home / 6,399.09-8,831.40-4,010.89

Finding the Fourth Proportional to 6,399.09, 8,831.40 and 4,010.89

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Solution

The fourth proportional to 6,399.09, 8,831.40 and 4,010.89 is: 5,535.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,399.09 : 8,831.40 = 4,010.89 : x
  2. Step 2: Convert to fraction form
    6,399.09/8,831.40 = 4,010.89/x
  3. Step 3: Cross multiply
    6,399.09x = 8,831.40 × 4,010.89
  4. Step 4: Simplify right side
    6,399.09x = 35,421,792.71
  5. Step 5: Solve for x
    x = 35,421,792.71/6,399.09
  6. Step 6: Final answer
    x = 5,535.44

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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.