Home / 7,221.02-10,831.53-2,603.90

Finding the Fourth Proportional to 7,221.02, 10,831.53 and 2,603.90

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Solution

The fourth proportional to 7,221.02, 10,831.53 and 2,603.90 is: 3,905.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.02 : 10,831.53 = 2,603.90 : x
  2. Step 2: Convert to fraction form
    7,221.02/10,831.53 = 2,603.90/x
  3. Step 3: Cross multiply
    7,221.02x = 10,831.53 × 2,603.90
  4. Step 4: Simplify right side
    7,221.02x = 28,204,220.97
  5. Step 5: Solve for x
    x = 28,204,220.97/7,221.02
  6. Step 6: Final answer
    x = 3,905.85

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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.