Home / 4,857.12-7,285.60-3,136.80

Finding the Fourth Proportional to 4,857.12, 7,285.60 and 3,136.80

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Solution

The fourth proportional to 4,857.12, 7,285.60 and 3,136.80 is: 4,705.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,857.12 : 7,285.60 = 3,136.80 : x
  2. Step 2: Convert to fraction form
    4,857.12/7,285.60 = 3,136.80/x
  3. Step 3: Cross multiply
    4,857.12x = 7,285.60 × 3,136.80
  4. Step 4: Simplify right side
    4,857.12x = 22,853,470.08
  5. Step 5: Solve for x
    x = 22,853,470.08/4,857.12
  6. Step 6: Final answer
    x = 4,705.15

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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.