Home / 3,930.03-5,417.15-2,982.74

Finding the Fourth Proportional to 3,930.03, 5,417.15 and 2,982.74

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Solution

The fourth proportional to 3,930.03, 5,417.15 and 2,982.74 is: 4,111.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.03 : 5,417.15 = 2,982.74 : x
  2. Step 2: Convert to fraction form
    3,930.03/5,417.15 = 2,982.74/x
  3. Step 3: Cross multiply
    3,930.03x = 5,417.15 × 2,982.74
  4. Step 4: Simplify right side
    3,930.03x = 16,157,907.99
  5. Step 5: Solve for x
    x = 16,157,907.99/3,930.03
  6. Step 6: Final answer
    x = 4,111.40

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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.