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Finding the Fourth Proportional to 2,077.10, 3,114.84 and 777.86

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Solution

The fourth proportional to 2,077.10, 3,114.84 and 777.86 is: 1,166.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.10 : 3,114.84 = 777.86 : x
  2. Step 2: Convert to fraction form
    2,077.10/3,114.84 = 777.86/x
  3. Step 3: Cross multiply
    2,077.10x = 3,114.84 × 777.86
  4. Step 4: Simplify right side
    2,077.10x = 2,422,909.44
  5. Step 5: Solve for x
    x = 2,422,909.44/2,077.10
  6. Step 6: Final answer
    x = 1,166.49

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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.