Home / 1,410.12-2,116.56-1,378.68

Finding the Fourth Proportional to 1,410.12, 2,116.56 and 1,378.68

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Solution

The fourth proportional to 1,410.12, 2,116.56 and 1,378.68 is: 2,069.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410.12 : 2,116.56 = 1,378.68 : x
  2. Step 2: Convert to fraction form
    1,410.12/2,116.56 = 1,378.68/x
  3. Step 3: Cross multiply
    1,410.12x = 2,116.56 × 1,378.68
  4. Step 4: Simplify right side
    1,410.12x = 2,918,058.94
  5. Step 5: Solve for x
    x = 2,918,058.94/1,410.12
  6. Step 6: Final answer
    x = 2,069.37

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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.