Home / 2,772.90-4,137.63-2,756.70

Finding the Fourth Proportional to 2,772.90, 4,137.63 and 2,756.70

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Solution

The fourth proportional to 2,772.90, 4,137.63 and 2,756.70 is: 4,113.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.90 : 4,137.63 = 2,756.70 : x
  2. Step 2: Convert to fraction form
    2,772.90/4,137.63 = 2,756.70/x
  3. Step 3: Cross multiply
    2,772.90x = 4,137.63 × 2,756.70
  4. Step 4: Simplify right side
    2,772.90x = 11,406,204.62
  5. Step 5: Solve for x
    x = 11,406,204.62/2,772.90
  6. Step 6: Final answer
    x = 4,113.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.