Home / 3,320.64-4,581.54-2,142.40

Finding the Fourth Proportional to 3,320.64, 4,581.54 and 2,142.40

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Solution

The fourth proportional to 3,320.64, 4,581.54 and 2,142.40 is: 2,955.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.64 : 4,581.54 = 2,142.40 : x
  2. Step 2: Convert to fraction form
    3,320.64/4,581.54 = 2,142.40/x
  3. Step 3: Cross multiply
    3,320.64x = 4,581.54 × 2,142.40
  4. Step 4: Simplify right side
    3,320.64x = 9,815,491.30
  5. Step 5: Solve for x
    x = 9,815,491.30/3,320.64
  6. Step 6: Final answer
    x = 2,955.90

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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.