Home / 3,038.81-4,190.76-1,917.81

Finding the Fourth Proportional to 3,038.81, 4,190.76 and 1,917.81

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Solution

The fourth proportional to 3,038.81, 4,190.76 and 1,917.81 is: 2,644.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,038.81 : 4,190.76 = 1,917.81 : x
  2. Step 2: Convert to fraction form
    3,038.81/4,190.76 = 1,917.81/x
  3. Step 3: Cross multiply
    3,038.81x = 4,190.76 × 1,917.81
  4. Step 4: Simplify right side
    3,038.81x = 8,037,081.44
  5. Step 5: Solve for x
    x = 8,037,081.44/3,038.81
  6. Step 6: Final answer
    x = 2,644.82

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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.