Home / 7,756.40-11,639.38-3,075.62

Finding the Fourth Proportional to 7,756.40, 11,639.38 and 3,075.62

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Solution

The fourth proportional to 7,756.40, 11,639.38 and 3,075.62 is: 4,615.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,756.40 : 11,639.38 = 3,075.62 : x
  2. Step 2: Convert to fraction form
    7,756.40/11,639.38 = 3,075.62/x
  3. Step 3: Cross multiply
    7,756.40x = 11,639.38 × 3,075.62
  4. Step 4: Simplify right side
    7,756.40x = 35,798,309.92
  5. Step 5: Solve for x
    x = 35,798,309.92/7,756.40
  6. Step 6: Final answer
    x = 4,615.33

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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.