Home / 7,836.72-11,756.16-2,643.36

Finding the Fourth Proportional to 7,836.72, 11,756.16 and 2,643.36

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Solution

The fourth proportional to 7,836.72, 11,756.16 and 2,643.36 is: 3,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,836.72 : 11,756.16 = 2,643.36 : x
  2. Step 2: Convert to fraction form
    7,836.72/11,756.16 = 2,643.36/x
  3. Step 3: Cross multiply
    7,836.72x = 11,756.16 × 2,643.36
  4. Step 4: Simplify right side
    7,836.72x = 31,075,763.10
  5. Step 5: Solve for x
    x = 31,075,763.10/7,836.72
  6. Step 6: Final answer
    x = 3,965.40

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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.