Home / 3,109.79-4,638.56-2,829.53

Finding the Fourth Proportional to 3,109.79, 4,638.56 and 2,829.53

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Solution

The fourth proportional to 3,109.79, 4,638.56 and 2,829.53 is: 4,220.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.79 : 4,638.56 = 2,829.53 : x
  2. Step 2: Convert to fraction form
    3,109.79/4,638.56 = 2,829.53/x
  3. Step 3: Cross multiply
    3,109.79x = 4,638.56 × 2,829.53
  4. Step 4: Simplify right side
    3,109.79x = 13,124,942.13
  5. Step 5: Solve for x
    x = 13,124,942.13/3,109.79
  6. Step 6: Final answer
    x = 4,220.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.