Home / 5,221.04-7,831.52-1,325.48

Finding the Fourth Proportional to 5,221.04, 7,831.52 and 1,325.48

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Solution

The fourth proportional to 5,221.04, 7,831.52 and 1,325.48 is: 1,988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.04 : 7,831.52 = 1,325.48 : x
  2. Step 2: Convert to fraction form
    5,221.04/7,831.52 = 1,325.48/x
  3. Step 3: Cross multiply
    5,221.04x = 7,831.52 × 1,325.48
  4. Step 4: Simplify right side
    5,221.04x = 10,380,523.13
  5. Step 5: Solve for x
    x = 10,380,523.13/5,221.04
  6. Step 6: Final answer
    x = 1,988.21

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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.