Home / 2,190.16-3,281.56-955.72

Finding the Fourth Proportional to 2,190.16, 3,281.56 and 955.72

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Solution

The fourth proportional to 2,190.16, 3,281.56 and 955.72 is: 1,431.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.16 : 3,281.56 = 955.72 : x
  2. Step 2: Convert to fraction form
    2,190.16/3,281.56 = 955.72/x
  3. Step 3: Cross multiply
    2,190.16x = 3,281.56 × 955.72
  4. Step 4: Simplify right side
    2,190.16x = 3,136,252.52
  5. Step 5: Solve for x
    x = 3,136,252.52/2,190.16
  6. Step 6: Final answer
    x = 1,431.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.