Home / 3,139.18-4,709.37-1,579.51

Finding the Fourth Proportional to 3,139.18, 4,709.37 and 1,579.51

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Solution

The fourth proportional to 3,139.18, 4,709.37 and 1,579.51 is: 2,369.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.18 : 4,709.37 = 1,579.51 : x
  2. Step 2: Convert to fraction form
    3,139.18/4,709.37 = 1,579.51/x
  3. Step 3: Cross multiply
    3,139.18x = 4,709.37 × 1,579.51
  4. Step 4: Simplify right side
    3,139.18x = 7,438,497.01
  5. Step 5: Solve for x
    x = 7,438,497.01/3,139.18
  6. Step 6: Final answer
    x = 2,369.57

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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.