Home / 4,485.12-6,728.32-1,887.68

Finding the Fourth Proportional to 4,485.12, 6,728.32 and 1,887.68

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Solution

The fourth proportional to 4,485.12, 6,728.32 and 1,887.68 is: 2,831.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,485.12 : 6,728.32 = 1,887.68 : x
  2. Step 2: Convert to fraction form
    4,485.12/6,728.32 = 1,887.68/x
  3. Step 3: Cross multiply
    4,485.12x = 6,728.32 × 1,887.68
  4. Step 4: Simplify right side
    4,485.12x = 12,700,915.10
  5. Step 5: Solve for x
    x = 12,700,915.10/4,485.12
  6. Step 6: Final answer
    x = 2,831.79

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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.