Home / 2,218.15-3,312.97-2,009.48

Finding the Fourth Proportional to 2,218.15, 3,312.97 and 2,009.48

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Solution

The fourth proportional to 2,218.15, 3,312.97 and 2,009.48 is: 3,001.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.15 : 3,312.97 = 2,009.48 : x
  2. Step 2: Convert to fraction form
    2,218.15/3,312.97 = 2,009.48/x
  3. Step 3: Cross multiply
    2,218.15x = 3,312.97 × 2,009.48
  4. Step 4: Simplify right side
    2,218.15x = 6,657,325.37
  5. Step 5: Solve for x
    x = 6,657,325.37/2,218.15
  6. Step 6: Final answer
    x = 3,001.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.