Home / 2,860.45-4,290.68-1,011.55

Finding the Fourth Proportional to 2,860.45, 4,290.68 and 1,011.55

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Solution

The fourth proportional to 2,860.45, 4,290.68 and 1,011.55 is: 1,517.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.45 : 4,290.68 = 1,011.55 : x
  2. Step 2: Convert to fraction form
    2,860.45/4,290.68 = 1,011.55/x
  3. Step 3: Cross multiply
    2,860.45x = 4,290.68 × 1,011.55
  4. Step 4: Simplify right side
    2,860.45x = 4,340,237.35
  5. Step 5: Solve for x
    x = 4,340,237.35/2,860.45
  6. Step 6: Final answer
    x = 1,517.33

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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.