Home / 2,646.72-3,968.64-1,621.44

Finding the Fourth Proportional to 2,646.72, 3,968.64 and 1,621.44

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Solution

The fourth proportional to 2,646.72, 3,968.64 and 1,621.44 is: 2,431.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,646.72 : 3,968.64 = 1,621.44 : x
  2. Step 2: Convert to fraction form
    2,646.72/3,968.64 = 1,621.44/x
  3. Step 3: Cross multiply
    2,646.72x = 3,968.64 × 1,621.44
  4. Step 4: Simplify right side
    2,646.72x = 6,434,911.64
  5. Step 5: Solve for x
    x = 6,434,911.64/2,646.72
  6. Step 6: Final answer
    x = 2,431.28

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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.