Home / 1,315.26-1,974.94-1,256.83

Finding the Fourth Proportional to 1,315.26, 1,974.94 and 1,256.83

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Solution

The fourth proportional to 1,315.26, 1,974.94 and 1,256.83 is: 1,887.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.26 : 1,974.94 = 1,256.83 : x
  2. Step 2: Convert to fraction form
    1,315.26/1,974.94 = 1,256.83/x
  3. Step 3: Cross multiply
    1,315.26x = 1,974.94 × 1,256.83
  4. Step 4: Simplify right side
    1,315.26x = 2,482,155.76
  5. Step 5: Solve for x
    x = 2,482,155.76/1,315.26
  6. Step 6: Final answer
    x = 1,887.20

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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.