Home / 2,715.36-4,072.59-767.58

Finding the Fourth Proportional to 2,715.36, 4,072.59 and 767.58

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Solution

The fourth proportional to 2,715.36, 4,072.59 and 767.58 is: 1,151.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.36 : 4,072.59 = 767.58 : x
  2. Step 2: Convert to fraction form
    2,715.36/4,072.59 = 767.58/x
  3. Step 3: Cross multiply
    2,715.36x = 4,072.59 × 767.58
  4. Step 4: Simplify right side
    2,715.36x = 3,126,038.63
  5. Step 5: Solve for x
    x = 3,126,038.63/2,715.36
  6. Step 6: Final answer
    x = 1,151.24

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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.