Home / 10,315.29-15,473.75-2,919.79

Finding the Fourth Proportional to 10,315.29, 15,473.75 and 2,919.79

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Solution

The fourth proportional to 10,315.29, 15,473.75 and 2,919.79 is: 4,379.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,315.29 : 15,473.75 = 2,919.79 : x
  2. Step 2: Convert to fraction form
    10,315.29/15,473.75 = 2,919.79/x
  3. Step 3: Cross multiply
    10,315.29x = 15,473.75 × 2,919.79
  4. Step 4: Simplify right side
    10,315.29x = 45,180,100.51
  5. Step 5: Solve for x
    x = 45,180,100.51/10,315.29
  6. Step 6: Final answer
    x = 4,379.92

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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.