Home / 2,715.19-4,072.78-1,784.01

Finding the Fourth Proportional to 2,715.19, 4,072.78 and 1,784.01

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Solution

The fourth proportional to 2,715.19, 4,072.78 and 1,784.01 is: 2,676.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.19 : 4,072.78 = 1,784.01 : x
  2. Step 2: Convert to fraction form
    2,715.19/4,072.78 = 1,784.01/x
  3. Step 3: Cross multiply
    2,715.19x = 4,072.78 × 1,784.01
  4. Step 4: Simplify right side
    2,715.19x = 7,265,897.75
  5. Step 5: Solve for x
    x = 7,265,897.75/2,715.19
  6. Step 6: Final answer
    x = 2,676.02

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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.