Home / 3,490.78-5,237.93-1,299.73

Finding the Fourth Proportional to 3,490.78, 5,237.93 and 1,299.73

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Solution

The fourth proportional to 3,490.78, 5,237.93 and 1,299.73 is: 1,950.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.78 : 5,237.93 = 1,299.73 : x
  2. Step 2: Convert to fraction form
    3,490.78/5,237.93 = 1,299.73/x
  3. Step 3: Cross multiply
    3,490.78x = 5,237.93 × 1,299.73
  4. Step 4: Simplify right side
    3,490.78x = 6,807,894.76
  5. Step 5: Solve for x
    x = 6,807,894.76/3,490.78
  6. Step 6: Final answer
    x = 1,950.25

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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.