Home / 3,430.71-4,734.09-1,938.75

Finding the Fourth Proportional to 3,430.71, 4,734.09 and 1,938.75

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Solution

The fourth proportional to 3,430.71, 4,734.09 and 1,938.75 is: 2,675.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.71 : 4,734.09 = 1,938.75 : x
  2. Step 2: Convert to fraction form
    3,430.71/4,734.09 = 1,938.75/x
  3. Step 3: Cross multiply
    3,430.71x = 4,734.09 × 1,938.75
  4. Step 4: Simplify right side
    3,430.71x = 9,178,216.99
  5. Step 5: Solve for x
    x = 9,178,216.99/3,430.71
  6. Step 6: Final answer
    x = 2,675.31

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Double scale
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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.