Home / 2,100.14-2,898.07-1,215.88

Finding the Fourth Proportional to 2,100.14, 2,898.07 and 1,215.88

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Solution

The fourth proportional to 2,100.14, 2,898.07 and 1,215.88 is: 1,677.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,100.14 : 2,898.07 = 1,215.88 : x
  2. Step 2: Convert to fraction form
    2,100.14/2,898.07 = 1,215.88/x
  3. Step 3: Cross multiply
    2,100.14x = 2,898.07 × 1,215.88
  4. Step 4: Simplify right side
    2,100.14x = 3,523,705.35
  5. Step 5: Solve for x
    x = 3,523,705.35/2,100.14
  6. Step 6: Final answer
    x = 1,677.84

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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.