Home / 1,511.84-2,082.96-1,394.72

Finding the Fourth Proportional to 1,511.84, 2,082.96 and 1,394.72

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Solution

The fourth proportional to 1,511.84, 2,082.96 and 1,394.72 is: 1,921.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.84 : 2,082.96 = 1,394.72 : x
  2. Step 2: Convert to fraction form
    1,511.84/2,082.96 = 1,394.72/x
  3. Step 3: Cross multiply
    1,511.84x = 2,082.96 × 1,394.72
  4. Step 4: Simplify right side
    1,511.84x = 2,905,145.97
  5. Step 5: Solve for x
    x = 2,905,145.97/1,511.84
  6. Step 6: Final answer
    x = 1,921.60

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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.