Home / 7,872.86-10,865.59-4,515.03

Finding the Fourth Proportional to 7,872.86, 10,865.59 and 4,515.03

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Solution

The fourth proportional to 7,872.86, 10,865.59 and 4,515.03 is: 6,231.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.86 : 10,865.59 = 4,515.03 : x
  2. Step 2: Convert to fraction form
    7,872.86/10,865.59 = 4,515.03/x
  3. Step 3: Cross multiply
    7,872.86x = 10,865.59 × 4,515.03
  4. Step 4: Simplify right side
    7,872.86x = 49,058,453.53
  5. Step 5: Solve for x
    x = 49,058,453.53/7,872.86
  6. Step 6: Final answer
    x = 6,231.34

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1.5x scale

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.