Home / 2,889.12-3,986.99-1,562.83

Finding the Fourth Proportional to 2,889.12, 3,986.99 and 1,562.83

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Solution

The fourth proportional to 2,889.12, 3,986.99 and 1,562.83 is: 2,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.12 : 3,986.99 = 1,562.83 : x
  2. Step 2: Convert to fraction form
    2,889.12/3,986.99 = 1,562.83/x
  3. Step 3: Cross multiply
    2,889.12x = 3,986.99 × 1,562.83
  4. Step 4: Simplify right side
    2,889.12x = 6,230,959.83
  5. Step 5: Solve for x
    x = 6,230,959.83/2,889.12
  6. Step 6: Final answer
    x = 2,156.70

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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.