Home / 2,118.36-2,924.46-1,420.14

Finding the Fourth Proportional to 2,118.36, 2,924.46 and 1,420.14

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Solution

The fourth proportional to 2,118.36, 2,924.46 and 1,420.14 is: 1,960.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.36 : 2,924.46 = 1,420.14 : x
  2. Step 2: Convert to fraction form
    2,118.36/2,924.46 = 1,420.14/x
  3. Step 3: Cross multiply
    2,118.36x = 2,924.46 × 1,420.14
  4. Step 4: Simplify right side
    2,118.36x = 4,153,142.62
  5. Step 5: Solve for x
    x = 4,153,142.62/2,118.36
  6. Step 6: Final answer
    x = 1,960.55

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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.