Home / 5,128.90-7,076.93-3,004.32

Finding the Fourth Proportional to 5,128.90, 7,076.93 and 3,004.32

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Solution

The fourth proportional to 5,128.90, 7,076.93 and 3,004.32 is: 4,145.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.90 : 7,076.93 = 3,004.32 : x
  2. Step 2: Convert to fraction form
    5,128.90/7,076.93 = 3,004.32/x
  3. Step 3: Cross multiply
    5,128.90x = 7,076.93 × 3,004.32
  4. Step 4: Simplify right side
    5,128.90x = 21,261,362.34
  5. Step 5: Solve for x
    x = 21,261,362.34/5,128.90
  6. Step 6: Final answer
    x = 4,145.40

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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.