Home / 3,920.29-5,907.40-3,242.20

Finding the Fourth Proportional to 3,920.29, 5,907.40 and 3,242.20

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Solution

The fourth proportional to 3,920.29, 5,907.40 and 3,242.20 is: 4,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.29 : 5,907.40 = 3,242.20 : x
  2. Step 2: Convert to fraction form
    3,920.29/5,907.40 = 3,242.20/x
  3. Step 3: Cross multiply
    3,920.29x = 5,907.40 × 3,242.20
  4. Step 4: Simplify right side
    3,920.29x = 19,152,972.28
  5. Step 5: Solve for x
    x = 19,152,972.28/3,920.29
  6. Step 6: Final answer
    x = 4,885.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.