Home / 5,220.67-7,831.04-1,325.09

Finding the Fourth Proportional to 5,220.67, 7,831.04 and 1,325.09

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Solution

The fourth proportional to 5,220.67, 7,831.04 and 1,325.09 is: 1,987.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.67 : 7,831.04 = 1,325.09 : x
  2. Step 2: Convert to fraction form
    5,220.67/7,831.04 = 1,325.09/x
  3. Step 3: Cross multiply
    5,220.67x = 7,831.04 × 1,325.09
  4. Step 4: Simplify right side
    5,220.67x = 10,376,832.79
  5. Step 5: Solve for x
    x = 10,376,832.79/5,220.67
  6. Step 6: Final answer
    x = 1,987.64

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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.