Home / 6,734.32-9,290.74-4,215.40

Finding the Fourth Proportional to 6,734.32, 9,290.74 and 4,215.40

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Solution

The fourth proportional to 6,734.32, 9,290.74 and 4,215.40 is: 5,815.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,734.32 : 9,290.74 = 4,215.40 : x
  2. Step 2: Convert to fraction form
    6,734.32/9,290.74 = 4,215.40/x
  3. Step 3: Cross multiply
    6,734.32x = 9,290.74 × 4,215.40
  4. Step 4: Simplify right side
    6,734.32x = 39,164,185.40
  5. Step 5: Solve for x
    x = 39,164,185.40/6,734.32
  6. Step 6: Final answer
    x = 5,815.61

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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.