Home / 2,106.28-2,904.78-1,320.44

Finding the Fourth Proportional to 2,106.28, 2,904.78 and 1,320.44

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Solution

The fourth proportional to 2,106.28, 2,904.78 and 1,320.44 is: 1,821.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.28 : 2,904.78 = 1,320.44 : x
  2. Step 2: Convert to fraction form
    2,106.28/2,904.78 = 1,320.44/x
  3. Step 3: Cross multiply
    2,106.28x = 2,904.78 × 1,320.44
  4. Step 4: Simplify right side
    2,106.28x = 3,835,587.70
  5. Step 5: Solve for x
    x = 3,835,587.70/2,106.28
  6. Step 6: Final answer
    x = 1,821.02

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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.