Home / 3,988.30-5,982.34-1,214.85

Finding the Fourth Proportional to 3,988.30, 5,982.34 and 1,214.85

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Solution

The fourth proportional to 3,988.30, 5,982.34 and 1,214.85 is: 1,822.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.30 : 5,982.34 = 1,214.85 : x
  2. Step 2: Convert to fraction form
    3,988.30/5,982.34 = 1,214.85/x
  3. Step 3: Cross multiply
    3,988.30x = 5,982.34 × 1,214.85
  4. Step 4: Simplify right side
    3,988.30x = 7,267,642.71
  5. Step 5: Solve for x
    x = 7,267,642.71/3,988.30
  6. Step 6: Final answer
    x = 1,822.24

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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.