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Finding the Fourth Proportional to 1,409.80, 2,110.50 and 1,046.20

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Solution

The fourth proportional to 1,409.80, 2,110.50 and 1,046.20 is: 1,566.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.80 : 2,110.50 = 1,046.20 : x
  2. Step 2: Convert to fraction form
    1,409.80/2,110.50 = 1,046.20/x
  3. Step 3: Cross multiply
    1,409.80x = 2,110.50 × 1,046.20
  4. Step 4: Simplify right side
    1,409.80x = 2,208,005.10
  5. Step 5: Solve for x
    x = 2,208,005.10/1,409.80
  6. Step 6: Final answer
    x = 1,566.18

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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.