Home / 2,412.12-3,325.64-1,913.90

Finding the Fourth Proportional to 2,412.12, 3,325.64 and 1,913.90

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Solution

The fourth proportional to 2,412.12, 3,325.64 and 1,913.90 is: 2,638.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,412.12 : 3,325.64 = 1,913.90 : x
  2. Step 2: Convert to fraction form
    2,412.12/3,325.64 = 1,913.90/x
  3. Step 3: Cross multiply
    2,412.12x = 3,325.64 × 1,913.90
  4. Step 4: Simplify right side
    2,412.12x = 6,364,941.14
  5. Step 5: Solve for x
    x = 6,364,941.14/2,412.12
  6. Step 6: Final answer
    x = 2,638.73

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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.