Home / 3,136.19-4,328.07-1,809.89

Finding the Fourth Proportional to 3,136.19, 4,328.07 and 1,809.89

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Solution

The fourth proportional to 3,136.19, 4,328.07 and 1,809.89 is: 2,497.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.19 : 4,328.07 = 1,809.89 : x
  2. Step 2: Convert to fraction form
    3,136.19/4,328.07 = 1,809.89/x
  3. Step 3: Cross multiply
    3,136.19x = 4,328.07 × 1,809.89
  4. Step 4: Simplify right side
    3,136.19x = 7,833,308.97
  5. Step 5: Solve for x
    x = 7,833,308.97/3,136.19
  6. Step 6: Final answer
    x = 2,497.72

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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.