Home / 2,820.45-4,224.60-1,520.40

Finding the Fourth Proportional to 2,820.45, 4,224.60 and 1,520.40

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Solution

The fourth proportional to 2,820.45, 4,224.60 and 1,520.40 is: 2,277.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.45 : 4,224.60 = 1,520.40 : x
  2. Step 2: Convert to fraction form
    2,820.45/4,224.60 = 1,520.40/x
  3. Step 3: Cross multiply
    2,820.45x = 4,224.60 × 1,520.40
  4. Step 4: Simplify right side
    2,820.45x = 6,423,081.84
  5. Step 5: Solve for x
    x = 6,423,081.84/2,820.45
  6. Step 6: Final answer
    x = 2,277.33

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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.