Home / 3,945.21-5,916.96-1,480.20

Finding the Fourth Proportional to 3,945.21, 5,916.96 and 1,480.20

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Solution

The fourth proportional to 3,945.21, 5,916.96 and 1,480.20 is: 2,219.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.21 : 5,916.96 = 1,480.20 : x
  2. Step 2: Convert to fraction form
    3,945.21/5,916.96 = 1,480.20/x
  3. Step 3: Cross multiply
    3,945.21x = 5,916.96 × 1,480.20
  4. Step 4: Simplify right side
    3,945.21x = 8,758,284.19
  5. Step 5: Solve for x
    x = 8,758,284.19/3,945.21
  6. Step 6: Final answer
    x = 2,219.98

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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.