Home / 2,801.45-3,865.58-1,622.30

Finding the Fourth Proportional to 2,801.45, 3,865.58 and 1,622.30

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Solution

The fourth proportional to 2,801.45, 3,865.58 and 1,622.30 is: 2,238.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.45 : 3,865.58 = 1,622.30 : x
  2. Step 2: Convert to fraction form
    2,801.45/3,865.58 = 1,622.30/x
  3. Step 3: Cross multiply
    2,801.45x = 3,865.58 × 1,622.30
  4. Step 4: Simplify right side
    2,801.45x = 6,271,102.99
  5. Step 5: Solve for x
    x = 6,271,102.99/2,801.45
  6. Step 6: Final answer
    x = 2,238.52

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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.