Home / 3,578.30-4,938.13-1,985.03

Finding the Fourth Proportional to 3,578.30, 4,938.13 and 1,985.03

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Solution

The fourth proportional to 3,578.30, 4,938.13 and 1,985.03 is: 2,739.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.30 : 4,938.13 = 1,985.03 : x
  2. Step 2: Convert to fraction form
    3,578.30/4,938.13 = 1,985.03/x
  3. Step 3: Cross multiply
    3,578.30x = 4,938.13 × 1,985.03
  4. Step 4: Simplify right side
    3,578.30x = 9,802,336.19
  5. Step 5: Solve for x
    x = 9,802,336.19/3,578.30
  6. Step 6: Final answer
    x = 2,739.38

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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.