Home / 3,430.90-4,734.60-1,938.81

Finding the Fourth Proportional to 3,430.90, 4,734.60 and 1,938.81

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Solution

The fourth proportional to 3,430.90, 4,734.60 and 1,938.81 is: 2,675.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.90 : 4,734.60 = 1,938.81 : x
  2. Step 2: Convert to fraction form
    3,430.90/4,734.60 = 1,938.81/x
  3. Step 3: Cross multiply
    3,430.90x = 4,734.60 × 1,938.81
  4. Step 4: Simplify right side
    3,430.90x = 9,179,489.83
  5. Step 5: Solve for x
    x = 9,179,489.83/3,430.90
  6. Step 6: Final answer
    x = 2,675.53

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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.