Home / 3,820.10-5,730.15-1,223.30

Finding the Fourth Proportional to 3,820.10, 5,730.15 and 1,223.30

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Solution

The fourth proportional to 3,820.10, 5,730.15 and 1,223.30 is: 1,834.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.10 : 5,730.15 = 1,223.30 : x
  2. Step 2: Convert to fraction form
    3,820.10/5,730.15 = 1,223.30/x
  3. Step 3: Cross multiply
    3,820.10x = 5,730.15 × 1,223.30
  4. Step 4: Simplify right side
    3,820.10x = 7,009,692.50
  5. Step 5: Solve for x
    x = 7,009,692.50/3,820.10
  6. Step 6: Final answer
    x = 1,834.95

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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.