Home / 3,430.72-4,733.88-1,938.55

Finding the Fourth Proportional to 3,430.72, 4,733.88 and 1,938.55

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Solution

The fourth proportional to 3,430.72, 4,733.88 and 1,938.55 is: 2,674.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.72 : 4,733.88 = 1,938.55 : x
  2. Step 2: Convert to fraction form
    3,430.72/4,733.88 = 1,938.55/x
  3. Step 3: Cross multiply
    3,430.72x = 4,733.88 × 1,938.55
  4. Step 4: Simplify right side
    3,430.72x = 9,176,863.07
  5. Step 5: Solve for x
    x = 9,176,863.07/3,430.72
  6. Step 6: Final answer
    x = 2,674.91

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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.