Home / 1,925.28-2,653.20-1,372.32

Finding the Fourth Proportional to 1,925.28, 2,653.20 and 1,372.32

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Solution

The fourth proportional to 1,925.28, 2,653.20 and 1,372.32 is: 1,891.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,925.28 : 2,653.20 = 1,372.32 : x
  2. Step 2: Convert to fraction form
    1,925.28/2,653.20 = 1,372.32/x
  3. Step 3: Cross multiply
    1,925.28x = 2,653.20 × 1,372.32
  4. Step 4: Simplify right side
    1,925.28x = 3,641,039.42
  5. Step 5: Solve for x
    x = 3,641,039.42/1,925.28
  6. Step 6: Final answer
    x = 1,891.17

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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.