Home / 3,851.95-5,315.68-2,173.35

Finding the Fourth Proportional to 3,851.95, 5,315.68 and 2,173.35

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Solution

The fourth proportional to 3,851.95, 5,315.68 and 2,173.35 is: 2,999.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.95 : 5,315.68 = 2,173.35 : x
  2. Step 2: Convert to fraction form
    3,851.95/5,315.68 = 2,173.35/x
  3. Step 3: Cross multiply
    3,851.95x = 5,315.68 × 2,173.35
  4. Step 4: Simplify right side
    3,851.95x = 11,552,833.13
  5. Step 5: Solve for x
    x = 11,552,833.13/3,851.95
  6. Step 6: Final answer
    x = 2,999.22

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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.