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Finding the Fourth Proportional to 3,672.78, 5,508.45 and 1,075.02

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Solution

The fourth proportional to 3,672.78, 5,508.45 and 1,075.02 is: 1,612.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,672.78 : 5,508.45 = 1,075.02 : x
  2. Step 2: Convert to fraction form
    3,672.78/5,508.45 = 1,075.02/x
  3. Step 3: Cross multiply
    3,672.78x = 5,508.45 × 1,075.02
  4. Step 4: Simplify right side
    3,672.78x = 5,921,693.92
  5. Step 5: Solve for x
    x = 5,921,693.92/3,672.78
  6. Step 6: Final answer
    x = 1,612.32

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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.