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Finding the Fourth Proportional to 2,742, 3,784.05 and 1,500

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Solution

The fourth proportional to 2,742, 3,784.05 and 1,500 is: 2,070.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742 : 3,784.05 = 1,500 : x
  2. Step 2: Convert to fraction form
    2,742/3,784.05 = 1,500/x
  3. Step 3: Cross multiply
    2,742x = 3,784.05 × 1,500
  4. Step 4: Simplify right side
    2,742x = 5,676,075
  5. Step 5: Solve for x
    x = 5,676,075/2,742
  6. Step 6: Final answer
    x = 2,070.05

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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.