Home / 3,619.49-4,990.31-3,087.32

Finding the Fourth Proportional to 3,619.49, 4,990.31 and 3,087.32

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Solution

The fourth proportional to 3,619.49, 4,990.31 and 3,087.32 is: 4,256.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.49 : 4,990.31 = 3,087.32 : x
  2. Step 2: Convert to fraction form
    3,619.49/4,990.31 = 3,087.32/x
  3. Step 3: Cross multiply
    3,619.49x = 4,990.31 × 3,087.32
  4. Step 4: Simplify right side
    3,619.49x = 15,406,655.06
  5. Step 5: Solve for x
    x = 15,406,655.06/3,619.49
  6. Step 6: Final answer
    x = 4,256.59

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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.