Home / 2,164.16-3,246.24-865.64

Finding the Fourth Proportional to 2,164.16, 3,246.24 and 865.64

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Solution

The fourth proportional to 2,164.16, 3,246.24 and 865.64 is: 1,298.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,164.16 : 3,246.24 = 865.64 : x
  2. Step 2: Convert to fraction form
    2,164.16/3,246.24 = 865.64/x
  3. Step 3: Cross multiply
    2,164.16x = 3,246.24 × 865.64
  4. Step 4: Simplify right side
    2,164.16x = 2,810,075.19
  5. Step 5: Solve for x
    x = 2,810,075.19/2,164.16
  6. Step 6: Final answer
    x = 1,298.46

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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.