Home / 3,128.99-4,676.20-2,509.79

Finding the Fourth Proportional to 3,128.99, 4,676.20 and 2,509.79

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Solution

The fourth proportional to 3,128.99, 4,676.20 and 2,509.79 is: 3,750.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.99 : 4,676.20 = 2,509.79 : x
  2. Step 2: Convert to fraction form
    3,128.99/4,676.20 = 2,509.79/x
  3. Step 3: Cross multiply
    3,128.99x = 4,676.20 × 2,509.79
  4. Step 4: Simplify right side
    3,128.99x = 11,736,250.34
  5. Step 5: Solve for x
    x = 11,736,250.34/3,128.99
  6. Step 6: Final answer
    x = 3,750.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.