Home / 2,122.64-2,929.68-1,336.16

Finding the Fourth Proportional to 2,122.64, 2,929.68 and 1,336.16

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Solution

The fourth proportional to 2,122.64, 2,929.68 and 1,336.16 is: 1,844.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.64 : 2,929.68 = 1,336.16 : x
  2. Step 2: Convert to fraction form
    2,122.64/2,929.68 = 1,336.16/x
  3. Step 3: Cross multiply
    2,122.64x = 2,929.68 × 1,336.16
  4. Step 4: Simplify right side
    2,122.64x = 3,914,521.23
  5. Step 5: Solve for x
    x = 3,914,521.23/2,122.64
  6. Step 6: Final answer
    x = 1,844.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.