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Finding the Fourth Proportional to 4,952.80, 7,429.20 and 4,175.20

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Solution

The fourth proportional to 4,952.80, 7,429.20 and 4,175.20 is: 6,262.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,952.80 : 7,429.20 = 4,175.20 : x
  2. Step 2: Convert to fraction form
    4,952.80/7,429.20 = 4,175.20/x
  3. Step 3: Cross multiply
    4,952.80x = 7,429.20 × 4,175.20
  4. Step 4: Simplify right side
    4,952.80x = 31,018,395.84
  5. Step 5: Solve for x
    x = 31,018,395.84/4,952.80
  6. Step 6: Final answer
    x = 6,262.80

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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.