Home / 2,143.96-3,211.68-1,045.02

Finding the Fourth Proportional to 2,143.96, 3,211.68 and 1,045.02

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Solution

The fourth proportional to 2,143.96, 3,211.68 and 1,045.02 is: 1,565.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.96 : 3,211.68 = 1,045.02 : x
  2. Step 2: Convert to fraction form
    2,143.96/3,211.68 = 1,045.02/x
  3. Step 3: Cross multiply
    2,143.96x = 3,211.68 × 1,045.02
  4. Step 4: Simplify right side
    2,143.96x = 3,356,269.83
  5. Step 5: Solve for x
    x = 3,356,269.83/2,143.96
  6. Step 6: Final answer
    x = 1,565.45

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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.