Home / 2,224.79-3,070.85-1,385.09

Finding the Fourth Proportional to 2,224.79, 3,070.85 and 1,385.09

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Solution

The fourth proportional to 2,224.79, 3,070.85 and 1,385.09 is: 1,911.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,224.79 : 3,070.85 = 1,385.09 : x
  2. Step 2: Convert to fraction form
    2,224.79/3,070.85 = 1,385.09/x
  3. Step 3: Cross multiply
    2,224.79x = 3,070.85 × 1,385.09
  4. Step 4: Simplify right side
    2,224.79x = 4,253,403.63
  5. Step 5: Solve for x
    x = 4,253,403.63/2,224.79
  6. Step 6: Final answer
    x = 1,911.82

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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.