Home / 2,913.64-4,022.46-1,921.32

Finding the Fourth Proportional to 2,913.64, 4,022.46 and 1,921.32

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Solution

The fourth proportional to 2,913.64, 4,022.46 and 1,921.32 is: 2,652.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.64 : 4,022.46 = 1,921.32 : x
  2. Step 2: Convert to fraction form
    2,913.64/4,022.46 = 1,921.32/x
  3. Step 3: Cross multiply
    2,913.64x = 4,022.46 × 1,921.32
  4. Step 4: Simplify right side
    2,913.64x = 7,728,432.85
  5. Step 5: Solve for x
    x = 7,728,432.85/2,913.64
  6. Step 6: Final answer
    x = 2,652.50

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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.