Home / 5,176.11-7,143.08-2,818.25

Finding the Fourth Proportional to 5,176.11, 7,143.08 and 2,818.25

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Solution

The fourth proportional to 5,176.11, 7,143.08 and 2,818.25 is: 3,889.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.11 : 7,143.08 = 2,818.25 : x
  2. Step 2: Convert to fraction form
    5,176.11/7,143.08 = 2,818.25/x
  3. Step 3: Cross multiply
    5,176.11x = 7,143.08 × 2,818.25
  4. Step 4: Simplify right side
    5,176.11x = 20,130,935.40
  5. Step 5: Solve for x
    x = 20,130,935.40/5,176.11
  6. Step 6: Final answer
    x = 3,889.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.