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Finding the Fourth Proportional to 2,255.76, 3,376.14 and 1,985.10

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Solution

The fourth proportional to 2,255.76, 3,376.14 and 1,985.10 is: 2,971.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.76 : 3,376.14 = 1,985.10 : x
  2. Step 2: Convert to fraction form
    2,255.76/3,376.14 = 1,985.10/x
  3. Step 3: Cross multiply
    2,255.76x = 3,376.14 × 1,985.10
  4. Step 4: Simplify right side
    2,255.76x = 6,701,975.51
  5. Step 5: Solve for x
    x = 6,701,975.51/2,255.76
  6. Step 6: Final answer
    x = 2,971.05

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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.