Home / 2,231.16-3,325.72-2,160.40

Finding the Fourth Proportional to 2,231.16, 3,325.72 and 2,160.40

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Solution

The fourth proportional to 2,231.16, 3,325.72 and 2,160.40 is: 3,220.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.16 : 3,325.72 = 2,160.40 : x
  2. Step 2: Convert to fraction form
    2,231.16/3,325.72 = 2,160.40/x
  3. Step 3: Cross multiply
    2,231.16x = 3,325.72 × 2,160.40
  4. Step 4: Simplify right side
    2,231.16x = 7,184,885.49
  5. Step 5: Solve for x
    x = 7,184,885.49/2,231.16
  6. Step 6: Final answer
    x = 3,220.25

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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.