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Finding the Fourth Proportional to 2,911.68, 4,367.52 and 2,479.68

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Solution

The fourth proportional to 2,911.68, 4,367.52 and 2,479.68 is: 3,719.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.68 : 4,367.52 = 2,479.68 : x
  2. Step 2: Convert to fraction form
    2,911.68/4,367.52 = 2,479.68/x
  3. Step 3: Cross multiply
    2,911.68x = 4,367.52 × 2,479.68
  4. Step 4: Simplify right side
    2,911.68x = 10,830,051.99
  5. Step 5: Solve for x
    x = 10,830,051.99/2,911.68
  6. Step 6: Final answer
    x = 3,719.52

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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.