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Finding the Fourth Proportional to 2,114.18, 2,918.18 and 1,230.34

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Solution

The fourth proportional to 2,114.18, 2,918.18 and 1,230.34 is: 1,698.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.18 : 2,918.18 = 1,230.34 : x
  2. Step 2: Convert to fraction form
    2,114.18/2,918.18 = 1,230.34/x
  3. Step 3: Cross multiply
    2,114.18x = 2,918.18 × 1,230.34
  4. Step 4: Simplify right side
    2,114.18x = 3,590,353.58
  5. Step 5: Solve for x
    x = 3,590,353.58/2,114.18
  6. Step 6: Final answer
    x = 1,698.23

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1.5x scale

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.