Home / 5,145.16-7,717.73-1,447.76

Finding the Fourth Proportional to 5,145.16, 7,717.73 and 1,447.76

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Solution

The fourth proportional to 5,145.16, 7,717.73 and 1,447.76 is: 2,171.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.16 : 7,717.73 = 1,447.76 : x
  2. Step 2: Convert to fraction form
    5,145.16/7,717.73 = 1,447.76/x
  3. Step 3: Cross multiply
    5,145.16x = 7,717.73 × 1,447.76
  4. Step 4: Simplify right side
    5,145.16x = 11,173,420.78
  5. Step 5: Solve for x
    x = 11,173,420.78/5,145.16
  6. Step 6: Final answer
    x = 2,171.64

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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.