Home / 2,391.70-3,591.60-1,776.10

Finding the Fourth Proportional to 2,391.70, 3,591.60 and 1,776.10

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Solution

The fourth proportional to 2,391.70, 3,591.60 and 1,776.10 is: 2,667.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.70 : 3,591.60 = 1,776.10 : x
  2. Step 2: Convert to fraction form
    2,391.70/3,591.60 = 1,776.10/x
  3. Step 3: Cross multiply
    2,391.70x = 3,591.60 × 1,776.10
  4. Step 4: Simplify right side
    2,391.70x = 6,379,040.76
  5. Step 5: Solve for x
    x = 6,379,040.76/2,391.70
  6. Step 6: Final answer
    x = 2,667.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.