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Finding the Fourth Proportional to 1,672.53, 2,302.94 and 1,485.70

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Solution

The fourth proportional to 1,672.53, 2,302.94 and 1,485.70 is: 2,045.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.53 : 2,302.94 = 1,485.70 : x
  2. Step 2: Convert to fraction form
    1,672.53/2,302.94 = 1,485.70/x
  3. Step 3: Cross multiply
    1,672.53x = 2,302.94 × 1,485.70
  4. Step 4: Simplify right side
    1,672.53x = 3,421,480.23
  5. Step 5: Solve for x
    x = 3,421,480.23/1,672.53
  6. Step 6: Final answer
    x = 2,045.69

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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.