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Finding the Fourth Proportional to 2,862.96, 4,294.46 and 782.92

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Solution

The fourth proportional to 2,862.96, 4,294.46 and 782.92 is: 1,174.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.96 : 4,294.46 = 782.92 : x
  2. Step 2: Convert to fraction form
    2,862.96/4,294.46 = 782.92/x
  3. Step 3: Cross multiply
    2,862.96x = 4,294.46 × 782.92
  4. Step 4: Simplify right side
    2,862.96x = 3,362,196.29
  5. Step 5: Solve for x
    x = 3,362,196.29/2,862.96
  6. Step 6: Final answer
    x = 1,174.38

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1.5x scale

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.