Home / 3,108.50-4,289.73-1,866.50

Finding the Fourth Proportional to 3,108.50, 4,289.73 and 1,866.50

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Solution

The fourth proportional to 3,108.50, 4,289.73 and 1,866.50 is: 2,575.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.50 : 4,289.73 = 1,866.50 : x
  2. Step 2: Convert to fraction form
    3,108.50/4,289.73 = 1,866.50/x
  3. Step 3: Cross multiply
    3,108.50x = 4,289.73 × 1,866.50
  4. Step 4: Simplify right side
    3,108.50x = 8,006,781.05
  5. Step 5: Solve for x
    x = 8,006,781.05/3,108.50
  6. Step 6: Final answer
    x = 2,575.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.