Home / 3,720.34-5,580.51-1,123.28

Finding the Fourth Proportional to 3,720.34, 5,580.51 and 1,123.28

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Solution

The fourth proportional to 3,720.34, 5,580.51 and 1,123.28 is: 1,684.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.34 : 5,580.51 = 1,123.28 : x
  2. Step 2: Convert to fraction form
    3,720.34/5,580.51 = 1,123.28/x
  3. Step 3: Cross multiply
    3,720.34x = 5,580.51 × 1,123.28
  4. Step 4: Simplify right side
    3,720.34x = 6,268,475.27
  5. Step 5: Solve for x
    x = 6,268,475.27/3,720.34
  6. Step 6: Final answer
    x = 1,684.92

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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.