Home / 3,500.78-5,250.99-1,309.35

Finding the Fourth Proportional to 3,500.78, 5,250.99 and 1,309.35

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Solution

The fourth proportional to 3,500.78, 5,250.99 and 1,309.35 is: 1,963.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,500.78 : 5,250.99 = 1,309.35 : x
  2. Step 2: Convert to fraction form
    3,500.78/5,250.99 = 1,309.35/x
  3. Step 3: Cross multiply
    3,500.78x = 5,250.99 × 1,309.35
  4. Step 4: Simplify right side
    3,500.78x = 6,875,383.76
  5. Step 5: Solve for x
    x = 6,875,383.76/3,500.78
  6. Step 6: Final answer
    x = 1,963.96

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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.