Home / 2,921.60-4,033.12-2,400.32

Finding the Fourth Proportional to 2,921.60, 4,033.12 and 2,400.32

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Solution

The fourth proportional to 2,921.60, 4,033.12 and 2,400.32 is: 3,313.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.60 : 4,033.12 = 2,400.32 : x
  2. Step 2: Convert to fraction form
    2,921.60/4,033.12 = 2,400.32/x
  3. Step 3: Cross multiply
    2,921.60x = 4,033.12 × 2,400.32
  4. Step 4: Simplify right side
    2,921.60x = 9,680,778.60
  5. Step 5: Solve for x
    x = 9,680,778.60/2,921.60
  6. Step 6: Final answer
    x = 3,313.52

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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.