Home / 4,230.20-5,840.02-2,815.80

Finding the Fourth Proportional to 4,230.20, 5,840.02 and 2,815.80

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Solution

The fourth proportional to 4,230.20, 5,840.02 and 2,815.80 is: 3,887.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,230.20 : 5,840.02 = 2,815.80 : x
  2. Step 2: Convert to fraction form
    4,230.20/5,840.02 = 2,815.80/x
  3. Step 3: Cross multiply
    4,230.20x = 5,840.02 × 2,815.80
  4. Step 4: Simplify right side
    4,230.20x = 16,444,328.32
  5. Step 5: Solve for x
    x = 16,444,328.32/4,230.20
  6. Step 6: Final answer
    x = 3,887.36

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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.