Home / 2,856.02-3,943.08-2,191.59

Finding the Fourth Proportional to 2,856.02, 3,943.08 and 2,191.59

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Solution

The fourth proportional to 2,856.02, 3,943.08 and 2,191.59 is: 3,025.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.02 : 3,943.08 = 2,191.59 : x
  2. Step 2: Convert to fraction form
    2,856.02/3,943.08 = 2,191.59/x
  3. Step 3: Cross multiply
    2,856.02x = 3,943.08 × 2,191.59
  4. Step 4: Simplify right side
    2,856.02x = 8,641,614.70
  5. Step 5: Solve for x
    x = 8,641,614.70/2,856.02
  6. Step 6: Final answer
    x = 3,025.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.