Home / 2,715.88-4,069.56-1,982.08

Finding the Fourth Proportional to 2,715.88, 4,069.56 and 1,982.08

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Solution

The fourth proportional to 2,715.88, 4,069.56 and 1,982.08 is: 2,970.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.88 : 4,069.56 = 1,982.08 : x
  2. Step 2: Convert to fraction form
    2,715.88/4,069.56 = 1,982.08/x
  3. Step 3: Cross multiply
    2,715.88x = 4,069.56 × 1,982.08
  4. Step 4: Simplify right side
    2,715.88x = 8,066,193.48
  5. Step 5: Solve for x
    x = 8,066,193.48/2,715.88
  6. Step 6: Final answer
    x = 2,970.01

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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.