Home / 3,720.79-5,580.58-1,255.56

Finding the Fourth Proportional to 3,720.79, 5,580.58 and 1,255.56

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Solution

The fourth proportional to 3,720.79, 5,580.58 and 1,255.56 is: 1,883.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.79 : 5,580.58 = 1,255.56 : x
  2. Step 2: Convert to fraction form
    3,720.79/5,580.58 = 1,255.56/x
  3. Step 3: Cross multiply
    3,720.79x = 5,580.58 × 1,255.56
  4. Step 4: Simplify right side
    3,720.79x = 7,006,753.02
  5. Step 5: Solve for x
    x = 7,006,753.02/3,720.79
  6. Step 6: Final answer
    x = 1,883.14

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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.