Home / 2,791.02-4,187.23-1,970.90

Finding the Fourth Proportional to 2,791.02, 4,187.23 and 1,970.90

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Solution

The fourth proportional to 2,791.02, 4,187.23 and 1,970.90 is: 2,956.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.02 : 4,187.23 = 1,970.90 : x
  2. Step 2: Convert to fraction form
    2,791.02/4,187.23 = 1,970.90/x
  3. Step 3: Cross multiply
    2,791.02x = 4,187.23 × 1,970.90
  4. Step 4: Simplify right side
    2,791.02x = 8,252,590.67
  5. Step 5: Solve for x
    x = 8,252,590.67/2,791.02
  6. Step 6: Final answer
    x = 2,956.84

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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.