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Finding the Fourth Proportional to 2,614.47, 3,920.18 and 1,055.22

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Solution

The fourth proportional to 2,614.47, 3,920.18 and 1,055.22 is: 1,582.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,614.47 : 3,920.18 = 1,055.22 : x
  2. Step 2: Convert to fraction form
    2,614.47/3,920.18 = 1,055.22/x
  3. Step 3: Cross multiply
    2,614.47x = 3,920.18 × 1,055.22
  4. Step 4: Simplify right side
    2,614.47x = 4,136,652.34
  5. Step 5: Solve for x
    x = 4,136,652.34/2,614.47
  6. Step 6: Final answer
    x = 1,582.21

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.