Home / 2,783.24-4,174.74-1,139.39

Finding the Fourth Proportional to 2,783.24, 4,174.74 and 1,139.39

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Solution

The fourth proportional to 2,783.24, 4,174.74 and 1,139.39 is: 1,709.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.24 : 4,174.74 = 1,139.39 : x
  2. Step 2: Convert to fraction form
    2,783.24/4,174.74 = 1,139.39/x
  3. Step 3: Cross multiply
    2,783.24x = 4,174.74 × 1,139.39
  4. Step 4: Simplify right side
    2,783.24x = 4,756,636.13
  5. Step 5: Solve for x
    x = 4,756,636.13/2,783.24
  6. Step 6: Final answer
    x = 1,709.03

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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.