Home / 2,770.87-4,156.20-1,126.96

Finding the Fourth Proportional to 2,770.87, 4,156.20 and 1,126.96

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Solution

The fourth proportional to 2,770.87, 4,156.20 and 1,126.96 is: 1,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.87 : 4,156.20 = 1,126.96 : x
  2. Step 2: Convert to fraction form
    2,770.87/4,156.20 = 1,126.96/x
  3. Step 3: Cross multiply
    2,770.87x = 4,156.20 × 1,126.96
  4. Step 4: Simplify right side
    2,770.87x = 4,683,871.15
  5. Step 5: Solve for x
    x = 4,683,871.15/2,770.87
  6. Step 6: Final answer
    x = 1,690.40

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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.