Home / 2,890.11-3,988.36-1,563.83

Finding the Fourth Proportional to 2,890.11, 3,988.36 and 1,563.83

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Solution

The fourth proportional to 2,890.11, 3,988.36 and 1,563.83 is: 2,158.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.11 : 3,988.36 = 1,563.83 : x
  2. Step 2: Convert to fraction form
    2,890.11/3,988.36 = 1,563.83/x
  3. Step 3: Cross multiply
    2,890.11x = 3,988.36 × 1,563.83
  4. Step 4: Simplify right side
    2,890.11x = 6,237,129.60
  5. Step 5: Solve for x
    x = 6,237,129.60/2,890.11
  6. Step 6: Final answer
    x = 2,158.09

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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.