Home / 2,890.27-3,988.57-1,631.58

Finding the Fourth Proportional to 2,890.27, 3,988.57 and 1,631.58

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Solution

The fourth proportional to 2,890.27, 3,988.57 and 1,631.58 is: 2,251.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.27 : 3,988.57 = 1,631.58 : x
  2. Step 2: Convert to fraction form
    2,890.27/3,988.57 = 1,631.58/x
  3. Step 3: Cross multiply
    2,890.27x = 3,988.57 × 1,631.58
  4. Step 4: Simplify right side
    2,890.27x = 6,507,671.04
  5. Step 5: Solve for x
    x = 6,507,671.04/2,890.27
  6. Step 6: Final answer
    x = 2,251.58

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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.