Home / 3,220.55-4,831.08-1,247.15

Finding the Fourth Proportional to 3,220.55, 4,831.08 and 1,247.15

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Solution

The fourth proportional to 3,220.55, 4,831.08 and 1,247.15 is: 1,870.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.55 : 4,831.08 = 1,247.15 : x
  2. Step 2: Convert to fraction form
    3,220.55/4,831.08 = 1,247.15/x
  3. Step 3: Cross multiply
    3,220.55x = 4,831.08 × 1,247.15
  4. Step 4: Simplify right side
    3,220.55x = 6,025,081.42
  5. Step 5: Solve for x
    x = 6,025,081.42/3,220.55
  6. Step 6: Final answer
    x = 1,870.82

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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.