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Finding the Fourth Proportional to 2,911.68, 4,368.14 and 965.24

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Solution

The fourth proportional to 2,911.68, 4,368.14 and 965.24 is: 1,448.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.68 : 4,368.14 = 965.24 : x
  2. Step 2: Convert to fraction form
    2,911.68/4,368.14 = 965.24/x
  3. Step 3: Cross multiply
    2,911.68x = 4,368.14 × 965.24
  4. Step 4: Simplify right side
    2,911.68x = 4,216,303.45
  5. Step 5: Solve for x
    x = 4,216,303.45/2,911.68
  6. Step 6: Final answer
    x = 1,448.07

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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.