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Finding the Fourth Proportional to 4,907.90, 7,360.05 and 1,621.10

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Solution

The fourth proportional to 4,907.90, 7,360.05 and 1,621.10 is: 2,431.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,907.90 : 7,360.05 = 1,621.10 : x
  2. Step 2: Convert to fraction form
    4,907.90/7,360.05 = 1,621.10/x
  3. Step 3: Cross multiply
    4,907.90x = 7,360.05 × 1,621.10
  4. Step 4: Simplify right side
    4,907.90x = 11,931,377.06
  5. Step 5: Solve for x
    x = 11,931,377.06/4,907.90
  6. Step 6: Final answer
    x = 2,431.06

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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.