Home / 8,415.36-12,626.28-3,220.02

Finding the Fourth Proportional to 8,415.36, 12,626.28 and 3,220.02

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Solution

The fourth proportional to 8,415.36, 12,626.28 and 3,220.02 is: 4,831.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.36 : 12,626.28 = 3,220.02 : x
  2. Step 2: Convert to fraction form
    8,415.36/12,626.28 = 3,220.02/x
  3. Step 3: Cross multiply
    8,415.36x = 12,626.28 × 3,220.02
  4. Step 4: Simplify right side
    8,415.36x = 40,656,874.13
  5. Step 5: Solve for x
    x = 40,656,874.13/8,415.36
  6. Step 6: Final answer
    x = 4,831.27

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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.