Home / 2,160.12-3,240-1,064.04

Finding the Fourth Proportional to 2,160.12, 3,240 and 1,064.04

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Solution

The fourth proportional to 2,160.12, 3,240 and 1,064.04 is: 1,595.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.12 : 3,240 = 1,064.04 : x
  2. Step 2: Convert to fraction form
    2,160.12/3,240 = 1,064.04/x
  3. Step 3: Cross multiply
    2,160.12x = 3,240 × 1,064.04
  4. Step 4: Simplify right side
    2,160.12x = 3,447,489.60
  5. Step 5: Solve for x
    x = 3,447,489.60/2,160.12
  6. Step 6: Final answer
    x = 1,595.97

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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.