Home / 2,605.36-3,915.33-1,307.74

Finding the Fourth Proportional to 2,605.36, 3,915.33 and 1,307.74

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Solution

The fourth proportional to 2,605.36, 3,915.33 and 1,307.74 is: 1,965.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.36 : 3,915.33 = 1,307.74 : x
  2. Step 2: Convert to fraction form
    2,605.36/3,915.33 = 1,307.74/x
  3. Step 3: Cross multiply
    2,605.36x = 3,915.33 × 1,307.74
  4. Step 4: Simplify right side
    2,605.36x = 5,120,233.65
  5. Step 5: Solve for x
    x = 5,120,233.65/2,605.36
  6. Step 6: Final answer
    x = 1,965.27

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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.