Home / 3,720.15-5,580.21-1,123.08

Finding the Fourth Proportional to 3,720.15, 5,580.21 and 1,123.08

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Solution

The fourth proportional to 3,720.15, 5,580.21 and 1,123.08 is: 1,684.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.15 : 5,580.21 = 1,123.08 : x
  2. Step 2: Convert to fraction form
    3,720.15/5,580.21 = 1,123.08/x
  3. Step 3: Cross multiply
    3,720.15x = 5,580.21 × 1,123.08
  4. Step 4: Simplify right side
    3,720.15x = 6,267,022.25
  5. Step 5: Solve for x
    x = 6,267,022.25/3,720.15
  6. Step 6: Final answer
    x = 1,684.62

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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.