Home / 1,454.79-2,171.01-1,299.09

Finding the Fourth Proportional to 1,454.79, 2,171.01 and 1,299.09

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Solution

The fourth proportional to 1,454.79, 2,171.01 and 1,299.09 is: 1,938.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.79 : 2,171.01 = 1,299.09 : x
  2. Step 2: Convert to fraction form
    1,454.79/2,171.01 = 1,299.09/x
  3. Step 3: Cross multiply
    1,454.79x = 2,171.01 × 1,299.09
  4. Step 4: Simplify right side
    1,454.79x = 2,820,331.79
  5. Step 5: Solve for x
    x = 2,820,331.79/1,454.79
  6. Step 6: Final answer
    x = 1,938.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.