Home / 2,156.39-2,974.70-1,631.51

Finding the Fourth Proportional to 2,156.39, 2,974.70 and 1,631.51

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Solution

The fourth proportional to 2,156.39, 2,974.70 and 1,631.51 is: 2,250.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.39 : 2,974.70 = 1,631.51 : x
  2. Step 2: Convert to fraction form
    2,156.39/2,974.70 = 1,631.51/x
  3. Step 3: Cross multiply
    2,156.39x = 2,974.70 × 1,631.51
  4. Step 4: Simplify right side
    2,156.39x = 4,853,244.64
  5. Step 5: Solve for x
    x = 4,853,244.64/2,156.39
  6. Step 6: Final answer
    x = 2,250.63

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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.