Home / 2,890.30-3,988.27-1,631.37

Finding the Fourth Proportional to 2,890.30, 3,988.27 and 1,631.37

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Solution

The fourth proportional to 2,890.30, 3,988.27 and 1,631.37 is: 2,251.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.30 : 3,988.27 = 1,631.37 : x
  2. Step 2: Convert to fraction form
    2,890.30/3,988.27 = 1,631.37/x
  3. Step 3: Cross multiply
    2,890.30x = 3,988.27 × 1,631.37
  4. Step 4: Simplify right side
    2,890.30x = 6,506,344.03
  5. Step 5: Solve for x
    x = 6,506,344.03/2,890.30
  6. Step 6: Final answer
    x = 2,251.10

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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.