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Finding the Fourth Proportional to 4,728, 6,525.76 and 3,331.20

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Solution

The fourth proportional to 4,728, 6,525.76 and 3,331.20 is: 4,597.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,728 : 6,525.76 = 3,331.20 : x
  2. Step 2: Convert to fraction form
    4,728/6,525.76 = 3,331.20/x
  3. Step 3: Cross multiply
    4,728x = 6,525.76 × 3,331.20
  4. Step 4: Simplify right side
    4,728x = 21,738,611.71
  5. Step 5: Solve for x
    x = 21,738,611.71/4,728
  6. Step 6: Final answer
    x = 4,597.85

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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.