Home / 5,172.16-7,758.72-1,709.44

Finding the Fourth Proportional to 5,172.16, 7,758.72 and 1,709.44

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Solution

The fourth proportional to 5,172.16, 7,758.72 and 1,709.44 is: 2,564.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.16 : 7,758.72 = 1,709.44 : x
  2. Step 2: Convert to fraction form
    5,172.16/7,758.72 = 1,709.44/x
  3. Step 3: Cross multiply
    5,172.16x = 7,758.72 × 1,709.44
  4. Step 4: Simplify right side
    5,172.16x = 13,263,066.32
  5. Step 5: Solve for x
    x = 13,263,066.32/5,172.16
  6. Step 6: Final answer
    x = 2,564.32

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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.