Home / 2,731.47-3,771.81-2,140.98

Finding the Fourth Proportional to 2,731.47, 3,771.81 and 2,140.98

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Solution

The fourth proportional to 2,731.47, 3,771.81 and 2,140.98 is: 2,956.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,731.47 : 3,771.81 = 2,140.98 : x
  2. Step 2: Convert to fraction form
    2,731.47/3,771.81 = 2,140.98/x
  3. Step 3: Cross multiply
    2,731.47x = 3,771.81 × 2,140.98
  4. Step 4: Simplify right side
    2,731.47x = 8,075,369.77
  5. Step 5: Solve for x
    x = 8,075,369.77/2,731.47
  6. Step 6: Final answer
    x = 2,956.42

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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.