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Finding the Fourth Proportional to 1,745.41, 2,618.11 and 649.63

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Solution

The fourth proportional to 1,745.41, 2,618.11 and 649.63 is: 974.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.41 : 2,618.11 = 649.63 : x
  2. Step 2: Convert to fraction form
    1,745.41/2,618.11 = 649.63/x
  3. Step 3: Cross multiply
    1,745.41x = 2,618.11 × 649.63
  4. Step 4: Simplify right side
    1,745.41x = 1,700,804.42
  5. Step 5: Solve for x
    x = 1,700,804.42/1,745.41
  6. Step 6: Final answer
    x = 974.45

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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.