Home / 4,718.21-7,078.34-1,431.55

Finding the Fourth Proportional to 4,718.21, 7,078.34 and 1,431.55

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Solution

The fourth proportional to 4,718.21, 7,078.34 and 1,431.55 is: 2,147.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,718.21 : 7,078.34 = 1,431.55 : x
  2. Step 2: Convert to fraction form
    4,718.21/7,078.34 = 1,431.55/x
  3. Step 3: Cross multiply
    4,718.21x = 7,078.34 × 1,431.55
  4. Step 4: Simplify right side
    4,718.21x = 10,133,002.00
  5. Step 5: Solve for x
    x = 10,133,002.00/4,718.21
  6. Step 6: Final answer
    x = 2,147.64

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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.