Home / 4,560.80-6,830.40-2,811.20

Finding the Fourth Proportional to 4,560.80, 6,830.40 and 2,811.20

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Solution

The fourth proportional to 4,560.80, 6,830.40 and 2,811.20 is: 4,210.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,560.80 : 6,830.40 = 2,811.20 : x
  2. Step 2: Convert to fraction form
    4,560.80/6,830.40 = 2,811.20/x
  3. Step 3: Cross multiply
    4,560.80x = 6,830.40 × 2,811.20
  4. Step 4: Simplify right side
    4,560.80x = 19,201,620.48
  5. Step 5: Solve for x
    x = 19,201,620.48/4,560.80
  6. Step 6: Final answer
    x = 4,210.14

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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.