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Finding the Fourth Proportional to 1,362.13, 1,880.80 and 1,046.90

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Solution

The fourth proportional to 1,362.13, 1,880.80 and 1,046.90 is: 1,445.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.13 : 1,880.80 = 1,046.90 : x
  2. Step 2: Convert to fraction form
    1,362.13/1,880.80 = 1,046.90/x
  3. Step 3: Cross multiply
    1,362.13x = 1,880.80 × 1,046.90
  4. Step 4: Simplify right side
    1,362.13x = 1,968,994.88
  5. Step 5: Solve for x
    x = 1,968,994.88/1,362.13
  6. Step 6: Final answer
    x = 1,445.53

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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.