Home / 3,124.95-4,305.69-2,239.20

Finding the Fourth Proportional to 3,124.95, 4,305.69 and 2,239.20

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Solution

The fourth proportional to 3,124.95, 4,305.69 and 2,239.20 is: 3,085.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.95 : 4,305.69 = 2,239.20 : x
  2. Step 2: Convert to fraction form
    3,124.95/4,305.69 = 2,239.20/x
  3. Step 3: Cross multiply
    3,124.95x = 4,305.69 × 2,239.20
  4. Step 4: Simplify right side
    3,124.95x = 9,641,301.05
  5. Step 5: Solve for x
    x = 9,641,301.05/3,124.95
  6. Step 6: Final answer
    x = 3,085.27

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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.