Home / 1,939.50-2,911.06-1,509.38

Finding the Fourth Proportional to 1,939.50, 2,911.06 and 1,509.38

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Solution

The fourth proportional to 1,939.50, 2,911.06 and 1,509.38 is: 2,265.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.50 : 2,911.06 = 1,509.38 : x
  2. Step 2: Convert to fraction form
    1,939.50/2,911.06 = 1,509.38/x
  3. Step 3: Cross multiply
    1,939.50x = 2,911.06 × 1,509.38
  4. Step 4: Simplify right side
    1,939.50x = 4,393,895.74
  5. Step 5: Solve for x
    x = 4,393,895.74/1,939.50
  6. Step 6: Final answer
    x = 2,265.48

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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.