Home / 1,427.18-2,140.86-453.32

Finding the Fourth Proportional to 1,427.18, 2,140.86 and 453.32

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Solution

The fourth proportional to 1,427.18, 2,140.86 and 453.32 is: 680.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.18 : 2,140.86 = 453.32 : x
  2. Step 2: Convert to fraction form
    1,427.18/2,140.86 = 453.32/x
  3. Step 3: Cross multiply
    1,427.18x = 2,140.86 × 453.32
  4. Step 4: Simplify right side
    1,427.18x = 970,494.66
  5. Step 5: Solve for x
    x = 970,494.66/1,427.18
  6. Step 6: Final answer
    x = 680.01

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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.