Home / 7,393.40-11,090.64-2,128.20

Finding the Fourth Proportional to 7,393.40, 11,090.64 and 2,128.20

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Solution

The fourth proportional to 7,393.40, 11,090.64 and 2,128.20 is: 3,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,393.40 : 11,090.64 = 2,128.20 : x
  2. Step 2: Convert to fraction form
    7,393.40/11,090.64 = 2,128.20/x
  3. Step 3: Cross multiply
    7,393.40x = 11,090.64 × 2,128.20
  4. Step 4: Simplify right side
    7,393.40x = 23,603,066.44
  5. Step 5: Solve for x
    x = 23,603,066.44/7,393.40
  6. Step 6: Final answer
    x = 3,192.45

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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.