Home / 1,412.16-1,948.14-1,116.96

Finding the Fourth Proportional to 1,412.16, 1,948.14 and 1,116.96

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Solution

The fourth proportional to 1,412.16, 1,948.14 and 1,116.96 is: 1,540.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.16 : 1,948.14 = 1,116.96 : x
  2. Step 2: Convert to fraction form
    1,412.16/1,948.14 = 1,116.96/x
  3. Step 3: Cross multiply
    1,412.16x = 1,948.14 × 1,116.96
  4. Step 4: Simplify right side
    1,412.16x = 2,175,994.45
  5. Step 5: Solve for x
    x = 2,175,994.45/1,412.16
  6. Step 6: Final answer
    x = 1,540.90

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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.