Home / 7,315.74-10,975.36-2,385.39

Finding the Fourth Proportional to 7,315.74, 10,975.36 and 2,385.39

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Solution

The fourth proportional to 7,315.74, 10,975.36 and 2,385.39 is: 3,578.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,315.74 : 10,975.36 = 2,385.39 : x
  2. Step 2: Convert to fraction form
    7,315.74/10,975.36 = 2,385.39/x
  3. Step 3: Cross multiply
    7,315.74x = 10,975.36 × 2,385.39
  4. Step 4: Simplify right side
    7,315.74x = 26,180,479.84
  5. Step 5: Solve for x
    x = 26,180,479.84/7,315.74
  6. Step 6: Final answer
    x = 3,578.65

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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.