Home / 2,421.34-3,343.79-2,086.63

Finding the Fourth Proportional to 2,421.34, 3,343.79 and 2,086.63

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Solution

The fourth proportional to 2,421.34, 3,343.79 and 2,086.63 is: 2,881.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.34 : 3,343.79 = 2,086.63 : x
  2. Step 2: Convert to fraction form
    2,421.34/3,343.79 = 2,086.63/x
  3. Step 3: Cross multiply
    2,421.34x = 3,343.79 × 2,086.63
  4. Step 4: Simplify right side
    2,421.34x = 6,977,235.81
  5. Step 5: Solve for x
    x = 6,977,235.81/2,421.34
  6. Step 6: Final answer
    x = 2,881.57

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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.