Home / 2,890.06-3,988.31-1,563.79

Finding the Fourth Proportional to 2,890.06, 3,988.31 and 1,563.79

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Solution

The fourth proportional to 2,890.06, 3,988.31 and 1,563.79 is: 2,158.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.06 : 3,988.31 = 1,563.79 : x
  2. Step 2: Convert to fraction form
    2,890.06/3,988.31 = 1,563.79/x
  3. Step 3: Cross multiply
    2,890.06x = 3,988.31 × 1,563.79
  4. Step 4: Simplify right side
    2,890.06x = 6,236,879.29
  5. Step 5: Solve for x
    x = 6,236,879.29/2,890.06
  6. Step 6: Final answer
    x = 2,158.04

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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.