Home / 1,420.94-2,125.08-1,109.18

Finding the Fourth Proportional to 1,420.94, 2,125.08 and 1,109.18

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Solution

The fourth proportional to 1,420.94, 2,125.08 and 1,109.18 is: 1,658.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420.94 : 2,125.08 = 1,109.18 : x
  2. Step 2: Convert to fraction form
    1,420.94/2,125.08 = 1,109.18/x
  3. Step 3: Cross multiply
    1,420.94x = 2,125.08 × 1,109.18
  4. Step 4: Simplify right side
    1,420.94x = 2,357,096.23
  5. Step 5: Solve for x
    x = 2,357,096.23/1,420.94
  6. Step 6: Final answer
    x = 1,658.83

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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.