Home / 3,115.35-4,299.10-1,718.07

Finding the Fourth Proportional to 3,115.35, 4,299.10 and 1,718.07

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Solution

The fourth proportional to 3,115.35, 4,299.10 and 1,718.07 is: 2,370.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.35 : 4,299.10 = 1,718.07 : x
  2. Step 2: Convert to fraction form
    3,115.35/4,299.10 = 1,718.07/x
  3. Step 3: Cross multiply
    3,115.35x = 4,299.10 × 1,718.07
  4. Step 4: Simplify right side
    3,115.35x = 7,386,154.74
  5. Step 5: Solve for x
    x = 7,386,154.74/3,115.35
  6. Step 6: Final answer
    x = 2,370.89

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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.