Home / 3,720.84-5,137.14-3,321.81

Finding the Fourth Proportional to 3,720.84, 5,137.14 and 3,321.81

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Solution

The fourth proportional to 3,720.84, 5,137.14 and 3,321.81 is: 4,586.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.84 : 5,137.14 = 3,321.81 : x
  2. Step 2: Convert to fraction form
    3,720.84/5,137.14 = 3,321.81/x
  3. Step 3: Cross multiply
    3,720.84x = 5,137.14 × 3,321.81
  4. Step 4: Simplify right side
    3,720.84x = 17,064,603.02
  5. Step 5: Solve for x
    x = 17,064,603.02/3,720.84
  6. Step 6: Final answer
    x = 4,586.22

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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.