Home / 5,143.45-7,097.56-2,905.57

Finding the Fourth Proportional to 5,143.45, 7,097.56 and 2,905.57

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Solution

The fourth proportional to 5,143.45, 7,097.56 and 2,905.57 is: 4,009.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.45 : 7,097.56 = 2,905.57 : x
  2. Step 2: Convert to fraction form
    5,143.45/7,097.56 = 2,905.57/x
  3. Step 3: Cross multiply
    5,143.45x = 7,097.56 × 2,905.57
  4. Step 4: Simplify right side
    5,143.45x = 20,622,407.39
  5. Step 5: Solve for x
    x = 20,622,407.39/5,143.45
  6. Step 6: Final answer
    x = 4,009.45

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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.