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Finding the Fourth Proportional to 4,807.20, 7,208.88 and 1,728.48

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Solution

The fourth proportional to 4,807.20, 7,208.88 and 1,728.48 is: 2,592.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,807.20 : 7,208.88 = 1,728.48 : x
  2. Step 2: Convert to fraction form
    4,807.20/7,208.88 = 1,728.48/x
  3. Step 3: Cross multiply
    4,807.20x = 7,208.88 × 1,728.48
  4. Step 4: Simplify right side
    4,807.20x = 12,460,404.90
  5. Step 5: Solve for x
    x = 12,460,404.90/4,807.20
  6. Step 6: Final answer
    x = 2,592.03

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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.