Home / 2,117.51-2,922.19-1,278.06

Finding the Fourth Proportional to 2,117.51, 2,922.19 and 1,278.06

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Solution

The fourth proportional to 2,117.51, 2,922.19 and 1,278.06 is: 1,763.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.51 : 2,922.19 = 1,278.06 : x
  2. Step 2: Convert to fraction form
    2,117.51/2,922.19 = 1,278.06/x
  3. Step 3: Cross multiply
    2,117.51x = 2,922.19 × 1,278.06
  4. Step 4: Simplify right side
    2,117.51x = 3,734,720.00
  5. Step 5: Solve for x
    x = 3,734,720.00/2,117.51
  6. Step 6: Final answer
    x = 1,763.73

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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.