Home / 7,689.77-11,535.21-2,759.45

Finding the Fourth Proportional to 7,689.77, 11,535.21 and 2,759.45

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Solution

The fourth proportional to 7,689.77, 11,535.21 and 2,759.45 is: 4,139.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689.77 : 11,535.21 = 2,759.45 : x
  2. Step 2: Convert to fraction form
    7,689.77/11,535.21 = 2,759.45/x
  3. Step 3: Cross multiply
    7,689.77x = 11,535.21 × 2,759.45
  4. Step 4: Simplify right side
    7,689.77x = 31,830,777.56
  5. Step 5: Solve for x
    x = 31,830,777.56/7,689.77
  6. Step 6: Final answer
    x = 4,139.37

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1.5x scale

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.