Home / 2,860.20-4,290.30-2,605.05

Finding the Fourth Proportional to 2,860.20, 4,290.30 and 2,605.05

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Solution

The fourth proportional to 2,860.20, 4,290.30 and 2,605.05 is: 3,907.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.20 : 4,290.30 = 2,605.05 : x
  2. Step 2: Convert to fraction form
    2,860.20/4,290.30 = 2,605.05/x
  3. Step 3: Cross multiply
    2,860.20x = 4,290.30 × 2,605.05
  4. Step 4: Simplify right side
    2,860.20x = 11,176,446.02
  5. Step 5: Solve for x
    x = 11,176,446.02/2,860.20
  6. Step 6: Final answer
    x = 3,907.58

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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.