Home / 2,213.49-3,054.65-1,218.77

Finding the Fourth Proportional to 2,213.49, 3,054.65 and 1,218.77

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Solution

The fourth proportional to 2,213.49, 3,054.65 and 1,218.77 is: 1,681.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.49 : 3,054.65 = 1,218.77 : x
  2. Step 2: Convert to fraction form
    2,213.49/3,054.65 = 1,218.77/x
  3. Step 3: Cross multiply
    2,213.49x = 3,054.65 × 1,218.77
  4. Step 4: Simplify right side
    2,213.49x = 3,722,894.41
  5. Step 5: Solve for x
    x = 3,722,894.41/2,213.49
  6. Step 6: Final answer
    x = 1,681.91

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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.