Home / 7,921.74-10,907.60-7,036

Finding the Fourth Proportional to 7,921.74, 10,907.60 and 7,036

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Solution

The fourth proportional to 7,921.74, 10,907.60 and 7,036 is: 9,688.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.74 : 10,907.60 = 7,036 : x
  2. Step 2: Convert to fraction form
    7,921.74/10,907.60 = 7,036/x
  3. Step 3: Cross multiply
    7,921.74x = 10,907.60 × 7,036
  4. Step 4: Simplify right side
    7,921.74x = 76,745,873.60
  5. Step 5: Solve for x
    x = 76,745,873.60/7,921.74
  6. Step 6: Final answer
    x = 9,688.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.