Home / 3,578.14-4,938.10-1,985.04

Finding the Fourth Proportional to 3,578.14, 4,938.10 and 1,985.04

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Solution

The fourth proportional to 3,578.14, 4,938.10 and 1,985.04 is: 2,739.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.14 : 4,938.10 = 1,985.04 : x
  2. Step 2: Convert to fraction form
    3,578.14/4,938.10 = 1,985.04/x
  3. Step 3: Cross multiply
    3,578.14x = 4,938.10 × 1,985.04
  4. Step 4: Simplify right side
    3,578.14x = 9,802,321.06
  5. Step 5: Solve for x
    x = 9,802,321.06/3,578.14
  6. Step 6: Final answer
    x = 2,739.50

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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.