Home / 10,314.79-15,470.35-2,919.09

Finding the Fourth Proportional to 10,314.79, 15,470.35 and 2,919.09

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Solution

The fourth proportional to 10,314.79, 15,470.35 and 2,919.09 is: 4,378.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,314.79 : 15,470.35 = 2,919.09 : x
  2. Step 2: Convert to fraction form
    10,314.79/15,470.35 = 2,919.09/x
  3. Step 3: Cross multiply
    10,314.79x = 15,470.35 × 2,919.09
  4. Step 4: Simplify right side
    10,314.79x = 45,159,343.98
  5. Step 5: Solve for x
    x = 45,159,343.98/10,314.79
  6. Step 6: Final answer
    x = 4,378.12

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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.