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Finding the Fourth Proportional to 2,389.04, 3,583.40 and 745.72

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Solution

The fourth proportional to 2,389.04, 3,583.40 and 745.72 is: 1,118.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.04 : 3,583.40 = 745.72 : x
  2. Step 2: Convert to fraction form
    2,389.04/3,583.40 = 745.72/x
  3. Step 3: Cross multiply
    2,389.04x = 3,583.40 × 745.72
  4. Step 4: Simplify right side
    2,389.04x = 2,672,213.05
  5. Step 5: Solve for x
    x = 2,672,213.05/2,389.04
  6. Step 6: Final answer
    x = 1,118.53

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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.