Home / 3,391.18-4,679.56-1,898.75

Finding the Fourth Proportional to 3,391.18, 4,679.56 and 1,898.75

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Solution

The fourth proportional to 3,391.18, 4,679.56 and 1,898.75 is: 2,620.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.18 : 4,679.56 = 1,898.75 : x
  2. Step 2: Convert to fraction form
    3,391.18/4,679.56 = 1,898.75/x
  3. Step 3: Cross multiply
    3,391.18x = 4,679.56 × 1,898.75
  4. Step 4: Simplify right side
    3,391.18x = 8,885,314.55
  5. Step 5: Solve for x
    x = 8,885,314.55/3,391.18
  6. Step 6: Final answer
    x = 2,620.12

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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.