Home / 1,450.40-2,176.14-670.78

Finding the Fourth Proportional to 1,450.40, 2,176.14 and 670.78

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Solution

The fourth proportional to 1,450.40, 2,176.14 and 670.78 is: 1,006.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450.40 : 2,176.14 = 670.78 : x
  2. Step 2: Convert to fraction form
    1,450.40/2,176.14 = 670.78/x
  3. Step 3: Cross multiply
    1,450.40x = 2,176.14 × 670.78
  4. Step 4: Simplify right side
    1,450.40x = 1,459,711.19
  5. Step 5: Solve for x
    x = 1,459,711.19/1,450.40
  6. Step 6: Final answer
    x = 1,006.42

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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.