Home / 2,146.08-3,216.39-913.16

Finding the Fourth Proportional to 2,146.08, 3,216.39 and 913.16

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Solution

The fourth proportional to 2,146.08, 3,216.39 and 913.16 is: 1,368.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.08 : 3,216.39 = 913.16 : x
  2. Step 2: Convert to fraction form
    2,146.08/3,216.39 = 913.16/x
  3. Step 3: Cross multiply
    2,146.08x = 3,216.39 × 913.16
  4. Step 4: Simplify right side
    2,146.08x = 2,937,078.69
  5. Step 5: Solve for x
    x = 2,937,078.69/2,146.08
  6. Step 6: Final answer
    x = 1,368.58

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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.