Home / 2,220.30-3,065.56-1,381.34

Finding the Fourth Proportional to 2,220.30, 3,065.56 and 1,381.34

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Solution

The fourth proportional to 2,220.30, 3,065.56 and 1,381.34 is: 1,907.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.30 : 3,065.56 = 1,381.34 : x
  2. Step 2: Convert to fraction form
    2,220.30/3,065.56 = 1,381.34/x
  3. Step 3: Cross multiply
    2,220.30x = 3,065.56 × 1,381.34
  4. Step 4: Simplify right side
    2,220.30x = 4,234,580.65
  5. Step 5: Solve for x
    x = 4,234,580.65/2,220.30
  6. Step 6: Final answer
    x = 1,907.21

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.