Home / 2,621.64-3,932.46-1,321.32

Finding the Fourth Proportional to 2,621.64, 3,932.46 and 1,321.32

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Solution

The fourth proportional to 2,621.64, 3,932.46 and 1,321.32 is: 1,981.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.64 : 3,932.46 = 1,321.32 : x
  2. Step 2: Convert to fraction form
    2,621.64/3,932.46 = 1,321.32/x
  3. Step 3: Cross multiply
    2,621.64x = 3,932.46 × 1,321.32
  4. Step 4: Simplify right side
    2,621.64x = 5,196,038.05
  5. Step 5: Solve for x
    x = 5,196,038.05/2,621.64
  6. Step 6: Final answer
    x = 1,981.98

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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.