Home / 3,170.07-4,376.42-1,911.35

Finding the Fourth Proportional to 3,170.07, 4,376.42 and 1,911.35

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Solution

The fourth proportional to 3,170.07, 4,376.42 and 1,911.35 is: 2,638.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.07 : 4,376.42 = 1,911.35 : x
  2. Step 2: Convert to fraction form
    3,170.07/4,376.42 = 1,911.35/x
  3. Step 3: Cross multiply
    3,170.07x = 4,376.42 × 1,911.35
  4. Step 4: Simplify right side
    3,170.07x = 8,364,870.37
  5. Step 5: Solve for x
    x = 8,364,870.37/3,170.07
  6. Step 6: Final answer
    x = 2,638.70

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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.