Home / 2,315.70-3,195.65-1,253.47

Finding the Fourth Proportional to 2,315.70, 3,195.65 and 1,253.47

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Solution

The fourth proportional to 2,315.70, 3,195.65 and 1,253.47 is: 1,729.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.70 : 3,195.65 = 1,253.47 : x
  2. Step 2: Convert to fraction form
    2,315.70/3,195.65 = 1,253.47/x
  3. Step 3: Cross multiply
    2,315.70x = 3,195.65 × 1,253.47
  4. Step 4: Simplify right side
    2,315.70x = 4,005,629.16
  5. Step 5: Solve for x
    x = 4,005,629.16/2,315.70
  6. Step 6: Final answer
    x = 1,729.77

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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.