Home / 1,307.36-1,961.30-1,176.65

Finding the Fourth Proportional to 1,307.36, 1,961.30 and 1,176.65

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Solution

The fourth proportional to 1,307.36, 1,961.30 and 1,176.65 is: 1,765.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.36 : 1,961.30 = 1,176.65 : x
  2. Step 2: Convert to fraction form
    1,307.36/1,961.30 = 1,176.65/x
  3. Step 3: Cross multiply
    1,307.36x = 1,961.30 × 1,176.65
  4. Step 4: Simplify right side
    1,307.36x = 2,307,756.78
  5. Step 5: Solve for x
    x = 2,307,756.78/1,307.36
  6. Step 6: Final answer
    x = 1,765.21

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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.