Home / 2,860.30-4,291.80-2,131.30

Finding the Fourth Proportional to 2,860.30, 4,291.80 and 2,131.30

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Solution

The fourth proportional to 2,860.30, 4,291.80 and 2,131.30 is: 3,197.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.30 : 4,291.80 = 2,131.30 : x
  2. Step 2: Convert to fraction form
    2,860.30/4,291.80 = 2,131.30/x
  3. Step 3: Cross multiply
    2,860.30x = 4,291.80 × 2,131.30
  4. Step 4: Simplify right side
    2,860.30x = 9,147,113.34
  5. Step 5: Solve for x
    x = 9,147,113.34/2,860.30
  6. Step 6: Final answer
    x = 3,197.96

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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.