Home / 1,921.65-2,869.55-1,910.13

Finding the Fourth Proportional to 1,921.65, 2,869.55 and 1,910.13

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Solution

The fourth proportional to 1,921.65, 2,869.55 and 1,910.13 is: 2,852.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.65 : 2,869.55 = 1,910.13 : x
  2. Step 2: Convert to fraction form
    1,921.65/2,869.55 = 1,910.13/x
  3. Step 3: Cross multiply
    1,921.65x = 2,869.55 × 1,910.13
  4. Step 4: Simplify right side
    1,921.65x = 5,481,203.99
  5. Step 5: Solve for x
    x = 5,481,203.99/1,921.65
  6. Step 6: Final answer
    x = 2,852.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.