Home / 5,145.68-7,718.52-4,374.56

Finding the Fourth Proportional to 5,145.68, 7,718.52 and 4,374.56

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Solution

The fourth proportional to 5,145.68, 7,718.52 and 4,374.56 is: 6,561.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.68 : 7,718.52 = 4,374.56 : x
  2. Step 2: Convert to fraction form
    5,145.68/7,718.52 = 4,374.56/x
  3. Step 3: Cross multiply
    5,145.68x = 7,718.52 × 4,374.56
  4. Step 4: Simplify right side
    5,145.68x = 33,765,128.85
  5. Step 5: Solve for x
    x = 33,765,128.85/5,145.68
  6. Step 6: Final answer
    x = 6,561.84

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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.