Home / 3,430.81-4,734.30-1,938.79

Finding the Fourth Proportional to 3,430.81, 4,734.30 and 1,938.79

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Solution

The fourth proportional to 3,430.81, 4,734.30 and 1,938.79 is: 2,675.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.81 : 4,734.30 = 1,938.79 : x
  2. Step 2: Convert to fraction form
    3,430.81/4,734.30 = 1,938.79/x
  3. Step 3: Cross multiply
    3,430.81x = 4,734.30 × 1,938.79
  4. Step 4: Simplify right side
    3,430.81x = 9,178,813.50
  5. Step 5: Solve for x
    x = 9,178,813.50/3,430.81
  6. Step 6: Final answer
    x = 2,675.41

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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.