Home / 2,860.30-4,290.86-1,399.53

Finding the Fourth Proportional to 2,860.30, 4,290.86 and 1,399.53

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Solution

The fourth proportional to 2,860.30, 4,290.86 and 1,399.53 is: 2,099.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.30 : 4,290.86 = 1,399.53 : x
  2. Step 2: Convert to fraction form
    2,860.30/4,290.86 = 1,399.53/x
  3. Step 3: Cross multiply
    2,860.30x = 4,290.86 × 1,399.53
  4. Step 4: Simplify right side
    2,860.30x = 6,005,187.30
  5. Step 5: Solve for x
    x = 6,005,187.30/2,860.30
  6. Step 6: Final answer
    x = 2,099.50

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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.