Home / 5,112.84-7,055.78-2,988.92

Finding the Fourth Proportional to 5,112.84, 7,055.78 and 2,988.92

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Solution

The fourth proportional to 5,112.84, 7,055.78 and 2,988.92 is: 4,124.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.84 : 7,055.78 = 2,988.92 : x
  2. Step 2: Convert to fraction form
    5,112.84/7,055.78 = 2,988.92/x
  3. Step 3: Cross multiply
    5,112.84x = 7,055.78 × 2,988.92
  4. Step 4: Simplify right side
    5,112.84x = 21,089,161.96
  5. Step 5: Solve for x
    x = 21,089,161.96/5,112.84
  6. Step 6: Final answer
    x = 4,124.75

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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.