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Finding the Fourth Proportional to 2,765.01, 3,810.47 and 1,977.69

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Solution

The fourth proportional to 2,765.01, 3,810.47 and 1,977.69 is: 2,725.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.01 : 3,810.47 = 1,977.69 : x
  2. Step 2: Convert to fraction form
    2,765.01/3,810.47 = 1,977.69/x
  3. Step 3: Cross multiply
    2,765.01x = 3,810.47 × 1,977.69
  4. Step 4: Simplify right side
    2,765.01x = 7,535,918.53
  5. Step 5: Solve for x
    x = 7,535,918.53/2,765.01
  6. Step 6: Final answer
    x = 2,725.46

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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.