Home / 7,515.36-11,275.56-3,619.32

Finding the Fourth Proportional to 7,515.36, 11,275.56 and 3,619.32

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Solution

The fourth proportional to 7,515.36, 11,275.56 and 3,619.32 is: 5,430.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,515.36 : 11,275.56 = 3,619.32 : x
  2. Step 2: Convert to fraction form
    7,515.36/11,275.56 = 3,619.32/x
  3. Step 3: Cross multiply
    7,515.36x = 11,275.56 × 3,619.32
  4. Step 4: Simplify right side
    7,515.36x = 40,809,859.82
  5. Step 5: Solve for x
    x = 40,809,859.82/7,515.36
  6. Step 6: Final answer
    x = 5,430.19

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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.