Home / 3,988.73-5,980.07-2,428.45

Finding the Fourth Proportional to 3,988.73, 5,980.07 and 2,428.45

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Solution

The fourth proportional to 3,988.73, 5,980.07 and 2,428.45 is: 3,640.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.73 : 5,980.07 = 2,428.45 : x
  2. Step 2: Convert to fraction form
    3,988.73/5,980.07 = 2,428.45/x
  3. Step 3: Cross multiply
    3,988.73x = 5,980.07 × 2,428.45
  4. Step 4: Simplify right side
    3,988.73x = 14,522,292.11
  5. Step 5: Solve for x
    x = 14,522,292.11/3,988.73
  6. Step 6: Final answer
    x = 3,640.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.