Home / 1,876.46-2,815.70-707.26

Finding the Fourth Proportional to 1,876.46, 2,815.70 and 707.26

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Solution

The fourth proportional to 1,876.46, 2,815.70 and 707.26 is: 1,061.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,876.46 : 2,815.70 = 707.26 : x
  2. Step 2: Convert to fraction form
    1,876.46/2,815.70 = 707.26/x
  3. Step 3: Cross multiply
    1,876.46x = 2,815.70 × 707.26
  4. Step 4: Simplify right side
    1,876.46x = 1,991,431.98
  5. Step 5: Solve for x
    x = 1,991,431.98/1,876.46
  6. Step 6: Final answer
    x = 1,061.27

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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.