Home / 2,220.66-3,065.62-1,381.64

Finding the Fourth Proportional to 2,220.66, 3,065.62 and 1,381.64

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Solution

The fourth proportional to 2,220.66, 3,065.62 and 1,381.64 is: 1,907.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.66 : 3,065.62 = 1,381.64 : x
  2. Step 2: Convert to fraction form
    2,220.66/3,065.62 = 1,381.64/x
  3. Step 3: Cross multiply
    2,220.66x = 3,065.62 × 1,381.64
  4. Step 4: Simplify right side
    2,220.66x = 4,235,583.22
  5. Step 5: Solve for x
    x = 4,235,583.22/2,220.66
  6. Step 6: Final answer
    x = 1,907.35

Related Problems

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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.