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Finding the Fourth Proportional to 1,703.70, 2,556.09 and 1,054.89

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Solution

The fourth proportional to 1,703.70, 2,556.09 and 1,054.89 is: 1,582.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,703.70 : 2,556.09 = 1,054.89 : x
  2. Step 2: Convert to fraction form
    1,703.70/2,556.09 = 1,054.89/x
  3. Step 3: Cross multiply
    1,703.70x = 2,556.09 × 1,054.89
  4. Step 4: Simplify right side
    1,703.70x = 2,696,393.78
  5. Step 5: Solve for x
    x = 2,696,393.78/1,703.70
  6. Step 6: Final answer
    x = 1,582.67

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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.