Home / 1,421.12-2,131.62-1,002.93

Finding the Fourth Proportional to 1,421.12, 2,131.62 and 1,002.93

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Solution

The fourth proportional to 1,421.12, 2,131.62 and 1,002.93 is: 1,504.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.12 : 2,131.62 = 1,002.93 : x
  2. Step 2: Convert to fraction form
    1,421.12/2,131.62 = 1,002.93/x
  3. Step 3: Cross multiply
    1,421.12x = 2,131.62 × 1,002.93
  4. Step 4: Simplify right side
    1,421.12x = 2,137,865.65
  5. Step 5: Solve for x
    x = 2,137,865.65/1,421.12
  6. Step 6: Final answer
    x = 1,504.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.