Home / 2,142.63-3,211.70-1,045.49

Finding the Fourth Proportional to 2,142.63, 3,211.70 and 1,045.49

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Solution

The fourth proportional to 2,142.63, 3,211.70 and 1,045.49 is: 1,567.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.63 : 3,211.70 = 1,045.49 : x
  2. Step 2: Convert to fraction form
    2,142.63/3,211.70 = 1,045.49/x
  3. Step 3: Cross multiply
    2,142.63x = 3,211.70 × 1,045.49
  4. Step 4: Simplify right side
    2,142.63x = 3,357,778.95
  5. Step 5: Solve for x
    x = 3,357,778.95/2,142.63
  6. Step 6: Final answer
    x = 1,567.13

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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.