Home / 1,492.25-2,059.40-862.90

Finding the Fourth Proportional to 1,492.25, 2,059.40 and 862.90

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Solution

The fourth proportional to 1,492.25, 2,059.40 and 862.90 is: 1,190.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.25 : 2,059.40 = 862.90 : x
  2. Step 2: Convert to fraction form
    1,492.25/2,059.40 = 862.90/x
  3. Step 3: Cross multiply
    1,492.25x = 2,059.40 × 862.90
  4. Step 4: Simplify right side
    1,492.25x = 1,777,053.27
  5. Step 5: Solve for x
    x = 1,777,053.27/1,492.25
  6. Step 6: Final answer
    x = 1,190.86

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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.