Home / 5,980.80-8,249.40-3,621

Finding the Fourth Proportional to 5,980.80, 8,249.40 and 3,621

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Solution

The fourth proportional to 5,980.80, 8,249.40 and 3,621 is: 4,994.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,980.80 : 8,249.40 = 3,621 : x
  2. Step 2: Convert to fraction form
    5,980.80/8,249.40 = 3,621/x
  3. Step 3: Cross multiply
    5,980.80x = 8,249.40 × 3,621
  4. Step 4: Simplify right side
    5,980.80x = 29,871,077.40
  5. Step 5: Solve for x
    x = 29,871,077.40/5,980.80
  6. Step 6: Final answer
    x = 4,994.50

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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.