Home / 1,427.42-2,141.30-549.72

Finding the Fourth Proportional to 1,427.42, 2,141.30 and 549.72

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Solution

The fourth proportional to 1,427.42, 2,141.30 and 549.72 is: 824.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.42 : 2,141.30 = 549.72 : x
  2. Step 2: Convert to fraction form
    1,427.42/2,141.30 = 549.72/x
  3. Step 3: Cross multiply
    1,427.42x = 2,141.30 × 549.72
  4. Step 4: Simplify right side
    1,427.42x = 1,177,116.81
  5. Step 5: Solve for x
    x = 1,177,116.81/1,427.42
  6. Step 6: Final answer
    x = 824.64

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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.