Home / 2,921.54-4,385.78-2,305.67

Finding the Fourth Proportional to 2,921.54, 4,385.78 and 2,305.67

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Solution

The fourth proportional to 2,921.54, 4,385.78 and 2,305.67 is: 3,461.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.54 : 4,385.78 = 2,305.67 : x
  2. Step 2: Convert to fraction form
    2,921.54/4,385.78 = 2,305.67/x
  3. Step 3: Cross multiply
    2,921.54x = 4,385.78 × 2,305.67
  4. Step 4: Simplify right side
    2,921.54x = 10,112,161.37
  5. Step 5: Solve for x
    x = 10,112,161.37/2,921.54
  6. Step 6: Final answer
    x = 3,461.24

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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.