Home / 2,118.62-2,920.04-1,409.19

Finding the Fourth Proportional to 2,118.62, 2,920.04 and 1,409.19

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Solution

The fourth proportional to 2,118.62, 2,920.04 and 1,409.19 is: 1,942.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.62 : 2,920.04 = 1,409.19 : x
  2. Step 2: Convert to fraction form
    2,118.62/2,920.04 = 1,409.19/x
  3. Step 3: Cross multiply
    2,118.62x = 2,920.04 × 1,409.19
  4. Step 4: Simplify right side
    2,118.62x = 4,114,895.31
  5. Step 5: Solve for x
    x = 4,114,895.31/2,118.62
  6. Step 6: Final answer
    x = 1,942.25

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Half scale
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Double scale
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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.