Home / 2,313.64-3,191.52-1,428.82

Finding the Fourth Proportional to 2,313.64, 3,191.52 and 1,428.82

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Solution

The fourth proportional to 2,313.64, 3,191.52 and 1,428.82 is: 1,970.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.64 : 3,191.52 = 1,428.82 : x
  2. Step 2: Convert to fraction form
    2,313.64/3,191.52 = 1,428.82/x
  3. Step 3: Cross multiply
    2,313.64x = 3,191.52 × 1,428.82
  4. Step 4: Simplify right side
    2,313.64x = 4,560,107.61
  5. Step 5: Solve for x
    x = 4,560,107.61/2,313.64
  6. Step 6: Final answer
    x = 1,970.97

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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.