Home / 7,190.89-10,728.57-6,401.52

Finding the Fourth Proportional to 7,190.89, 10,728.57 and 6,401.52

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Solution

The fourth proportional to 7,190.89, 10,728.57 and 6,401.52 is: 9,550.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.89 : 10,728.57 = 6,401.52 : x
  2. Step 2: Convert to fraction form
    7,190.89/10,728.57 = 6,401.52/x
  3. Step 3: Cross multiply
    7,190.89x = 10,728.57 × 6,401.52
  4. Step 4: Simplify right side
    7,190.89x = 68,679,155.43
  5. Step 5: Solve for x
    x = 68,679,155.43/7,190.89
  6. Step 6: Final answer
    x = 9,550.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.