Home / 3,720.05-5,578.44-1,254.20

Finding the Fourth Proportional to 3,720.05, 5,578.44 and 1,254.20

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Solution

The fourth proportional to 3,720.05, 5,578.44 and 1,254.20 is: 1,880.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.05 : 5,578.44 = 1,254.20 : x
  2. Step 2: Convert to fraction form
    3,720.05/5,578.44 = 1,254.20/x
  3. Step 3: Cross multiply
    3,720.05x = 5,578.44 × 1,254.20
  4. Step 4: Simplify right side
    3,720.05x = 6,996,479.45
  5. Step 5: Solve for x
    x = 6,996,479.45/3,720.05
  6. Step 6: Final answer
    x = 1,880.75

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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.