Home / 2,857.85-3,943.81-1,598.90

Finding the Fourth Proportional to 2,857.85, 3,943.81 and 1,598.90

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Solution

The fourth proportional to 2,857.85, 3,943.81 and 1,598.90 is: 2,206.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.85 : 3,943.81 = 1,598.90 : x
  2. Step 2: Convert to fraction form
    2,857.85/3,943.81 = 1,598.90/x
  3. Step 3: Cross multiply
    2,857.85x = 3,943.81 × 1,598.90
  4. Step 4: Simplify right side
    2,857.85x = 6,305,757.81
  5. Step 5: Solve for x
    x = 6,305,757.81/2,857.85
  6. Step 6: Final answer
    x = 2,206.47

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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.