Home / 3,125.69-4,679.20-1,889.36

Finding the Fourth Proportional to 3,125.69, 4,679.20 and 1,889.36

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Solution

The fourth proportional to 3,125.69, 4,679.20 and 1,889.36 is: 2,828.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.69 : 4,679.20 = 1,889.36 : x
  2. Step 2: Convert to fraction form
    3,125.69/4,679.20 = 1,889.36/x
  3. Step 3: Cross multiply
    3,125.69x = 4,679.20 × 1,889.36
  4. Step 4: Simplify right side
    3,125.69x = 8,840,693.31
  5. Step 5: Solve for x
    x = 8,840,693.31/3,125.69
  6. Step 6: Final answer
    x = 2,828.40

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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.