Home / 3,120.54-4,683.99-1,561.68

Finding the Fourth Proportional to 3,120.54, 4,683.99 and 1,561.68

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Solution

The fourth proportional to 3,120.54, 4,683.99 and 1,561.68 is: 2,344.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.54 : 4,683.99 = 1,561.68 : x
  2. Step 2: Convert to fraction form
    3,120.54/4,683.99 = 1,561.68/x
  3. Step 3: Cross multiply
    3,120.54x = 4,683.99 × 1,561.68
  4. Step 4: Simplify right side
    3,120.54x = 7,314,862.27
  5. Step 5: Solve for x
    x = 7,314,862.27/3,120.54
  6. Step 6: Final answer
    x = 2,344.10

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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.