Home / 2,309.98-3,187.74-1,315.28

Finding the Fourth Proportional to 2,309.98, 3,187.74 and 1,315.28

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Solution

The fourth proportional to 2,309.98, 3,187.74 and 1,315.28 is: 1,815.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.98 : 3,187.74 = 1,315.28 : x
  2. Step 2: Convert to fraction form
    2,309.98/3,187.74 = 1,315.28/x
  3. Step 3: Cross multiply
    2,309.98x = 3,187.74 × 1,315.28
  4. Step 4: Simplify right side
    2,309.98x = 4,192,770.67
  5. Step 5: Solve for x
    x = 4,192,770.67/2,309.98
  6. Step 6: Final answer
    x = 1,815.07

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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.