Home / 3,999.90-5,519.79-2,407.53

Finding the Fourth Proportional to 3,999.90, 5,519.79 and 2,407.53

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Solution

The fourth proportional to 3,999.90, 5,519.79 and 2,407.53 is: 3,322.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.90 : 5,519.79 = 2,407.53 : x
  2. Step 2: Convert to fraction form
    3,999.90/5,519.79 = 2,407.53/x
  3. Step 3: Cross multiply
    3,999.90x = 5,519.79 × 2,407.53
  4. Step 4: Simplify right side
    3,999.90x = 13,289,060.02
  5. Step 5: Solve for x
    x = 13,289,060.02/3,999.90
  6. Step 6: Final answer
    x = 3,322.35

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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.