Home / 2,315.49-3,471.68-1,275.99

Finding the Fourth Proportional to 2,315.49, 3,471.68 and 1,275.99

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Solution

The fourth proportional to 2,315.49, 3,471.68 and 1,275.99 is: 1,913.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.49 : 3,471.68 = 1,275.99 : x
  2. Step 2: Convert to fraction form
    2,315.49/3,471.68 = 1,275.99/x
  3. Step 3: Cross multiply
    2,315.49x = 3,471.68 × 1,275.99
  4. Step 4: Simplify right side
    2,315.49x = 4,429,811.60
  5. Step 5: Solve for x
    x = 4,429,811.60/2,315.49
  6. Step 6: Final answer
    x = 1,913.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.