Home / 1,890.74-2,609.18-1,051.40

Finding the Fourth Proportional to 1,890.74, 2,609.18 and 1,051.40

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Solution

The fourth proportional to 1,890.74, 2,609.18 and 1,051.40 is: 1,450.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.74 : 2,609.18 = 1,051.40 : x
  2. Step 2: Convert to fraction form
    1,890.74/2,609.18 = 1,051.40/x
  3. Step 3: Cross multiply
    1,890.74x = 2,609.18 × 1,051.40
  4. Step 4: Simplify right side
    1,890.74x = 2,743,291.85
  5. Step 5: Solve for x
    x = 2,743,291.85/1,890.74
  6. Step 6: Final answer
    x = 1,450.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.