Home / 3,139.56-4,331.48-1,812.98

Finding the Fourth Proportional to 3,139.56, 4,331.48 and 1,812.98

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Solution

The fourth proportional to 3,139.56, 4,331.48 and 1,812.98 is: 2,501.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.56 : 4,331.48 = 1,812.98 : x
  2. Step 2: Convert to fraction form
    3,139.56/4,331.48 = 1,812.98/x
  3. Step 3: Cross multiply
    3,139.56x = 4,331.48 × 1,812.98
  4. Step 4: Simplify right side
    3,139.56x = 7,852,888.37
  5. Step 5: Solve for x
    x = 7,852,888.37/3,139.56
  6. Step 6: Final answer
    x = 2,501.27

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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.