Home / 7,287.35-10,921.86-3,955.55

Finding the Fourth Proportional to 7,287.35, 10,921.86 and 3,955.55

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Solution

The fourth proportional to 7,287.35, 10,921.86 and 3,955.55 is: 5,928.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.35 : 10,921.86 = 3,955.55 : x
  2. Step 2: Convert to fraction form
    7,287.35/10,921.86 = 3,955.55/x
  3. Step 3: Cross multiply
    7,287.35x = 10,921.86 × 3,955.55
  4. Step 4: Simplify right side
    7,287.35x = 43,201,908.71
  5. Step 5: Solve for x
    x = 43,201,908.71/7,287.35
  6. Step 6: Final answer
    x = 5,928.35

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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.