Home / 1,421.93-2,124.13-1,028.56

Finding the Fourth Proportional to 1,421.93, 2,124.13 and 1,028.56

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Solution

The fourth proportional to 1,421.93, 2,124.13 and 1,028.56 is: 1,536.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.93 : 2,124.13 = 1,028.56 : x
  2. Step 2: Convert to fraction form
    1,421.93/2,124.13 = 1,028.56/x
  3. Step 3: Cross multiply
    1,421.93x = 2,124.13 × 1,028.56
  4. Step 4: Simplify right side
    1,421.93x = 2,184,791.13
  5. Step 5: Solve for x
    x = 2,184,791.13/1,421.93
  6. Step 6: Final answer
    x = 1,536.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.