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Finding the Fourth Proportional to 2,700.92, 4,050.93 and 1,918.55

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Solution

The fourth proportional to 2,700.92, 4,050.93 and 1,918.55 is: 2,877.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,700.92 : 4,050.93 = 1,918.55 : x
  2. Step 2: Convert to fraction form
    2,700.92/4,050.93 = 1,918.55/x
  3. Step 3: Cross multiply
    2,700.92x = 4,050.93 × 1,918.55
  4. Step 4: Simplify right side
    2,700.92x = 7,771,891.50
  5. Step 5: Solve for x
    x = 7,771,891.50/2,700.92
  6. Step 6: Final answer
    x = 2,877.50

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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.