Home / 2,112.64-2,910.88-1,521.28

Finding the Fourth Proportional to 2,112.64, 2,910.88 and 1,521.28

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Solution

The fourth proportional to 2,112.64, 2,910.88 and 1,521.28 is: 2,096.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.64 : 2,910.88 = 1,521.28 : x
  2. Step 2: Convert to fraction form
    2,112.64/2,910.88 = 1,521.28/x
  3. Step 3: Cross multiply
    2,112.64x = 2,910.88 × 1,521.28
  4. Step 4: Simplify right side
    2,112.64x = 4,428,263.53
  5. Step 5: Solve for x
    x = 4,428,263.53/2,112.64
  6. Step 6: Final answer
    x = 2,096.08

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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.