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Finding the Fourth Proportional to 1,907.18, 2,631.03 and 1,486.82

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Solution

The fourth proportional to 1,907.18, 2,631.03 and 1,486.82 is: 2,051.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.18 : 2,631.03 = 1,486.82 : x
  2. Step 2: Convert to fraction form
    1,907.18/2,631.03 = 1,486.82/x
  3. Step 3: Cross multiply
    1,907.18x = 2,631.03 × 1,486.82
  4. Step 4: Simplify right side
    1,907.18x = 3,911,868.02
  5. Step 5: Solve for x
    x = 3,911,868.02/1,907.18
  6. Step 6: Final answer
    x = 2,051.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.