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Finding the Fourth Proportional to 2,917.21, 4,377.11 and 1,530.22

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Solution

The fourth proportional to 2,917.21, 4,377.11 and 1,530.22 is: 2,296.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.21 : 4,377.11 = 1,530.22 : x
  2. Step 2: Convert to fraction form
    2,917.21/4,377.11 = 1,530.22/x
  3. Step 3: Cross multiply
    2,917.21x = 4,377.11 × 1,530.22
  4. Step 4: Simplify right side
    2,917.21x = 6,697,941.26
  5. Step 5: Solve for x
    x = 6,697,941.26/2,917.21
  6. Step 6: Final answer
    x = 2,296.01

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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.