Home / 2,438.51-3,365.12-1,390.55

Finding the Fourth Proportional to 2,438.51, 3,365.12 and 1,390.55

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Solution

The fourth proportional to 2,438.51, 3,365.12 and 1,390.55 is: 1,918.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.51 : 3,365.12 = 1,390.55 : x
  2. Step 2: Convert to fraction form
    2,438.51/3,365.12 = 1,390.55/x
  3. Step 3: Cross multiply
    2,438.51x = 3,365.12 × 1,390.55
  4. Step 4: Simplify right side
    2,438.51x = 4,679,354.27
  5. Step 5: Solve for x
    x = 4,679,354.27/2,438.51
  6. Step 6: Final answer
    x = 1,918.94

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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.