Home / 5,261.14-7,891.51-1,312.39

Finding the Fourth Proportional to 5,261.14, 7,891.51 and 1,312.39

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Solution

The fourth proportional to 5,261.14, 7,891.51 and 1,312.39 is: 1,968.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.14 : 7,891.51 = 1,312.39 : x
  2. Step 2: Convert to fraction form
    5,261.14/7,891.51 = 1,312.39/x
  3. Step 3: Cross multiply
    5,261.14x = 7,891.51 × 1,312.39
  4. Step 4: Simplify right side
    5,261.14x = 10,356,738.81
  5. Step 5: Solve for x
    x = 10,356,738.81/5,261.14
  6. Step 6: Final answer
    x = 1,968.54

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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.