Home / 5,145.05-7,718.72-1,636.13

Finding the Fourth Proportional to 5,145.05, 7,718.72 and 1,636.13

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Solution

The fourth proportional to 5,145.05, 7,718.72 and 1,636.13 is: 2,454.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.05 : 7,718.72 = 1,636.13 : x
  2. Step 2: Convert to fraction form
    5,145.05/7,718.72 = 1,636.13/x
  3. Step 3: Cross multiply
    5,145.05x = 7,718.72 × 1,636.13
  4. Step 4: Simplify right side
    5,145.05x = 12,628,782.58
  5. Step 5: Solve for x
    x = 12,628,782.58/5,145.05
  6. Step 6: Final answer
    x = 2,454.55

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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.