Home / 1,631.31-2,251.58-1,368.87

Finding the Fourth Proportional to 1,631.31, 2,251.58 and 1,368.87

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Solution

The fourth proportional to 1,631.31, 2,251.58 and 1,368.87 is: 1,889.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.31 : 2,251.58 = 1,368.87 : x
  2. Step 2: Convert to fraction form
    1,631.31/2,251.58 = 1,368.87/x
  3. Step 3: Cross multiply
    1,631.31x = 2,251.58 × 1,368.87
  4. Step 4: Simplify right side
    1,631.31x = 3,082,113.47
  5. Step 5: Solve for x
    x = 3,082,113.47/1,631.31
  6. Step 6: Final answer
    x = 1,889.35

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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.