Home / 7,420.07-11,127.47-2,739.08

Finding the Fourth Proportional to 7,420.07, 11,127.47 and 2,739.08

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Solution

The fourth proportional to 7,420.07, 11,127.47 and 2,739.08 is: 4,107.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.07 : 11,127.47 = 2,739.08 : x
  2. Step 2: Convert to fraction form
    7,420.07/11,127.47 = 2,739.08/x
  3. Step 3: Cross multiply
    7,420.07x = 11,127.47 × 2,739.08
  4. Step 4: Simplify right side
    7,420.07x = 30,478,961.19
  5. Step 5: Solve for x
    x = 30,478,961.19/7,420.07
  6. Step 6: Final answer
    x = 4,107.64

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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.