Home / 3,518.30-5,276.75-1,019.78

Finding the Fourth Proportional to 3,518.30, 5,276.75 and 1,019.78

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Solution

The fourth proportional to 3,518.30, 5,276.75 and 1,019.78 is: 1,529.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.30 : 5,276.75 = 1,019.78 : x
  2. Step 2: Convert to fraction form
    3,518.30/5,276.75 = 1,019.78/x
  3. Step 3: Cross multiply
    3,518.30x = 5,276.75 × 1,019.78
  4. Step 4: Simplify right side
    3,518.30x = 5,381,092.63
  5. Step 5: Solve for x
    x = 5,381,092.63/3,518.30
  6. Step 6: Final answer
    x = 1,529.46

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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.