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Finding the Fourth Proportional to 3,354.78, 4,629.56 and 1,862.90

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Solution

The fourth proportional to 3,354.78, 4,629.56 and 1,862.90 is: 2,570.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,354.78 : 4,629.56 = 1,862.90 : x
  2. Step 2: Convert to fraction form
    3,354.78/4,629.56 = 1,862.90/x
  3. Step 3: Cross multiply
    3,354.78x = 4,629.56 × 1,862.90
  4. Step 4: Simplify right side
    3,354.78x = 8,624,407.32
  5. Step 5: Solve for x
    x = 8,624,407.32/3,354.78
  6. Step 6: Final answer
    x = 2,570.78

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1.5x scale

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.