Home / 2,313.64-3,192.78-1,265.80

Finding the Fourth Proportional to 2,313.64, 3,192.78 and 1,265.80

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Solution

The fourth proportional to 2,313.64, 3,192.78 and 1,265.80 is: 1,746.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.64 : 3,192.78 = 1,265.80 : x
  2. Step 2: Convert to fraction form
    2,313.64/3,192.78 = 1,265.80/x
  3. Step 3: Cross multiply
    2,313.64x = 3,192.78 × 1,265.80
  4. Step 4: Simplify right side
    2,313.64x = 4,041,420.92
  5. Step 5: Solve for x
    x = 4,041,420.92/2,313.64
  6. Step 6: Final answer
    x = 1,746.78

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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.