Home / 3,199.68-4,415.40-1,802.16

Finding the Fourth Proportional to 3,199.68, 4,415.40 and 1,802.16

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Solution

The fourth proportional to 3,199.68, 4,415.40 and 1,802.16 is: 2,486.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,199.68 : 4,415.40 = 1,802.16 : x
  2. Step 2: Convert to fraction form
    3,199.68/4,415.40 = 1,802.16/x
  3. Step 3: Cross multiply
    3,199.68x = 4,415.40 × 1,802.16
  4. Step 4: Simplify right side
    3,199.68x = 7,957,257.26
  5. Step 5: Solve for x
    x = 7,957,257.26/3,199.68
  6. Step 6: Final answer
    x = 2,486.89

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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.