Home / 2,905.20-4,010.04-1,911.24

Finding the Fourth Proportional to 2,905.20, 4,010.04 and 1,911.24

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Solution

The fourth proportional to 2,905.20, 4,010.04 and 1,911.24 is: 2,638.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.20 : 4,010.04 = 1,911.24 : x
  2. Step 2: Convert to fraction form
    2,905.20/4,010.04 = 1,911.24/x
  3. Step 3: Cross multiply
    2,905.20x = 4,010.04 × 1,911.24
  4. Step 4: Simplify right side
    2,905.20x = 7,664,148.85
  5. Step 5: Solve for x
    x = 7,664,148.85/2,905.20
  6. Step 6: Final answer
    x = 2,638.08

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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.