Home / 7,904.46-11,855.34-2,638.74

Finding the Fourth Proportional to 7,904.46, 11,855.34 and 2,638.74

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Solution

The fourth proportional to 7,904.46, 11,855.34 and 2,638.74 is: 3,957.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,904.46 : 11,855.34 = 2,638.74 : x
  2. Step 2: Convert to fraction form
    7,904.46/11,855.34 = 2,638.74/x
  3. Step 3: Cross multiply
    7,904.46x = 11,855.34 × 2,638.74
  4. Step 4: Simplify right side
    7,904.46x = 31,283,159.87
  5. Step 5: Solve for x
    x = 31,283,159.87/7,904.46
  6. Step 6: Final answer
    x = 3,957.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.