Home / 5,176.12-7,142.69-2,938.05

Finding the Fourth Proportional to 5,176.12, 7,142.69 and 2,938.05

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Solution

The fourth proportional to 5,176.12, 7,142.69 and 2,938.05 is: 4,054.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.12 : 7,142.69 = 2,938.05 : x
  2. Step 2: Convert to fraction form
    5,176.12/7,142.69 = 2,938.05/x
  3. Step 3: Cross multiply
    5,176.12x = 7,142.69 × 2,938.05
  4. Step 4: Simplify right side
    5,176.12x = 20,985,537.30
  5. Step 5: Solve for x
    x = 20,985,537.30/5,176.12
  6. Step 6: Final answer
    x = 4,054.30

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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.