Home / 2,118.36-2,924.31-1,411.45

Finding the Fourth Proportional to 2,118.36, 2,924.31 and 1,411.45

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Solution

The fourth proportional to 2,118.36, 2,924.31 and 1,411.45 is: 1,948.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.36 : 2,924.31 = 1,411.45 : x
  2. Step 2: Convert to fraction form
    2,118.36/2,924.31 = 1,411.45/x
  3. Step 3: Cross multiply
    2,118.36x = 2,924.31 × 1,411.45
  4. Step 4: Simplify right side
    2,118.36x = 4,127,517.35
  5. Step 5: Solve for x
    x = 4,127,517.35/2,118.36
  6. Step 6: Final answer
    x = 1,948.45

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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.