Home / 3,578.36-4,938.42-1,985.16

Finding the Fourth Proportional to 3,578.36, 4,938.42 and 1,985.16

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Solution

The fourth proportional to 3,578.36, 4,938.42 and 1,985.16 is: 2,739.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.36 : 4,938.42 = 1,985.16 : x
  2. Step 2: Convert to fraction form
    3,578.36/4,938.42 = 1,985.16/x
  3. Step 3: Cross multiply
    3,578.36x = 4,938.42 × 1,985.16
  4. Step 4: Simplify right side
    3,578.36x = 9,803,553.85
  5. Step 5: Solve for x
    x = 9,803,553.85/3,578.36
  6. Step 6: Final answer
    x = 2,739.68

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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.