Home / 1,707.75-2,354.27-1,211.56

Finding the Fourth Proportional to 1,707.75, 2,354.27 and 1,211.56

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Solution

The fourth proportional to 1,707.75, 2,354.27 and 1,211.56 is: 1,670.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,707.75 : 2,354.27 = 1,211.56 : x
  2. Step 2: Convert to fraction form
    1,707.75/2,354.27 = 1,211.56/x
  3. Step 3: Cross multiply
    1,707.75x = 2,354.27 × 1,211.56
  4. Step 4: Simplify right side
    1,707.75x = 2,852,327.42
  5. Step 5: Solve for x
    x = 2,852,327.42/1,707.75
  6. Step 6: Final answer
    x = 1,670.23

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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.