Home / 2,800.96-3,865.52-1,622.40

Finding the Fourth Proportional to 2,800.96, 3,865.52 and 1,622.40

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Solution

The fourth proportional to 2,800.96, 3,865.52 and 1,622.40 is: 2,239.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.96 : 3,865.52 = 1,622.40 : x
  2. Step 2: Convert to fraction form
    2,800.96/3,865.52 = 1,622.40/x
  3. Step 3: Cross multiply
    2,800.96x = 3,865.52 × 1,622.40
  4. Step 4: Simplify right side
    2,800.96x = 6,271,419.65
  5. Step 5: Solve for x
    x = 6,271,419.65/2,800.96
  6. Step 6: Final answer
    x = 2,239.03

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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.