Home / 3,101.70-4,280.36-1,775.45

Finding the Fourth Proportional to 3,101.70, 4,280.36 and 1,775.45

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Solution

The fourth proportional to 3,101.70, 4,280.36 and 1,775.45 is: 2,450.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.70 : 4,280.36 = 1,775.45 : x
  2. Step 2: Convert to fraction form
    3,101.70/4,280.36 = 1,775.45/x
  3. Step 3: Cross multiply
    3,101.70x = 4,280.36 × 1,775.45
  4. Step 4: Simplify right side
    3,101.70x = 7,599,534.88
  5. Step 5: Solve for x
    x = 7,599,534.88/3,101.70
  6. Step 6: Final answer
    x = 2,450.12

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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.