Home / 2,860.55-4,292.40-1,399.71

Finding the Fourth Proportional to 2,860.55, 4,292.40 and 1,399.71

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Solution

The fourth proportional to 2,860.55, 4,292.40 and 1,399.71 is: 2,100.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.55 : 4,292.40 = 1,399.71 : x
  2. Step 2: Convert to fraction form
    2,860.55/4,292.40 = 1,399.71/x
  3. Step 3: Cross multiply
    2,860.55x = 4,292.40 × 1,399.71
  4. Step 4: Simplify right side
    2,860.55x = 6,008,115.20
  5. Step 5: Solve for x
    x = 6,008,115.20/2,860.55
  6. Step 6: Final answer
    x = 2,100.34

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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.