Home / 7,153.85-10,729.86-2,768.31

Finding the Fourth Proportional to 7,153.85, 10,729.86 and 2,768.31

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Solution

The fourth proportional to 7,153.85, 10,729.86 and 2,768.31 is: 4,152.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.85 : 10,729.86 = 2,768.31 : x
  2. Step 2: Convert to fraction form
    7,153.85/10,729.86 = 2,768.31/x
  3. Step 3: Cross multiply
    7,153.85x = 10,729.86 × 2,768.31
  4. Step 4: Simplify right side
    7,153.85x = 29,703,578.74
  5. Step 5: Solve for x
    x = 29,703,578.74/7,153.85
  6. Step 6: Final answer
    x = 4,152.11

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1.5x scale

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.