Home / 2,643.20-3,647.68-1,464.32

Finding the Fourth Proportional to 2,643.20, 3,647.68 and 1,464.32

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Solution

The fourth proportional to 2,643.20, 3,647.68 and 1,464.32 is: 2,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.20 : 3,647.68 = 1,464.32 : x
  2. Step 2: Convert to fraction form
    2,643.20/3,647.68 = 1,464.32/x
  3. Step 3: Cross multiply
    2,643.20x = 3,647.68 × 1,464.32
  4. Step 4: Simplify right side
    2,643.20x = 5,341,370.78
  5. Step 5: Solve for x
    x = 5,341,370.78/2,643.20
  6. Step 6: Final answer
    x = 2,020.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.