Home / 5,126.72-7,072.10-3,428.16

Finding the Fourth Proportional to 5,126.72, 7,072.10 and 3,428.16

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Solution

The fourth proportional to 5,126.72, 7,072.10 and 3,428.16 is: 4,729.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.72 : 7,072.10 = 3,428.16 : x
  2. Step 2: Convert to fraction form
    5,126.72/7,072.10 = 3,428.16/x
  3. Step 3: Cross multiply
    5,126.72x = 7,072.10 × 3,428.16
  4. Step 4: Simplify right side
    5,126.72x = 24,244,290.34
  5. Step 5: Solve for x
    x = 24,244,290.34/5,126.72
  6. Step 6: Final answer
    x = 4,729.01

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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.