Home / 3,220.40-4,829.16-1,985.92

Finding the Fourth Proportional to 3,220.40, 4,829.16 and 1,985.92

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Solution

The fourth proportional to 3,220.40, 4,829.16 and 1,985.92 is: 2,977.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.40 : 4,829.16 = 1,985.92 : x
  2. Step 2: Convert to fraction form
    3,220.40/4,829.16 = 1,985.92/x
  3. Step 3: Cross multiply
    3,220.40x = 4,829.16 × 1,985.92
  4. Step 4: Simplify right side
    3,220.40x = 9,590,325.43
  5. Step 5: Solve for x
    x = 9,590,325.43/3,220.40
  6. Step 6: Final answer
    x = 2,977.99

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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.