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Finding the Fourth Proportional to 2,968.81, 4,453.20 and 777.51

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Solution

The fourth proportional to 2,968.81, 4,453.20 and 777.51 is: 1,166.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,968.81 : 4,453.20 = 777.51 : x
  2. Step 2: Convert to fraction form
    2,968.81/4,453.20 = 777.51/x
  3. Step 3: Cross multiply
    2,968.81x = 4,453.20 × 777.51
  4. Step 4: Simplify right side
    2,968.81x = 3,462,407.53
  5. Step 5: Solve for x
    x = 3,462,407.53/2,968.81
  6. Step 6: Final answer
    x = 1,166.26

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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.