Home / 1,427.01-2,140.74-453.04

Finding the Fourth Proportional to 1,427.01, 2,140.74 and 453.04

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Solution

The fourth proportional to 1,427.01, 2,140.74 and 453.04 is: 679.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.01 : 2,140.74 = 453.04 : x
  2. Step 2: Convert to fraction form
    1,427.01/2,140.74 = 453.04/x
  3. Step 3: Cross multiply
    1,427.01x = 2,140.74 × 453.04
  4. Step 4: Simplify right side
    1,427.01x = 969,830.15
  5. Step 5: Solve for x
    x = 969,830.15/1,427.01
  6. Step 6: Final answer
    x = 679.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.