Home / 3,645.72-5,030.51-2,153.43

Finding the Fourth Proportional to 3,645.72, 5,030.51 and 2,153.43

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Solution

The fourth proportional to 3,645.72, 5,030.51 and 2,153.43 is: 2,971.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,645.72 : 5,030.51 = 2,153.43 : x
  2. Step 2: Convert to fraction form
    3,645.72/5,030.51 = 2,153.43/x
  3. Step 3: Cross multiply
    3,645.72x = 5,030.51 × 2,153.43
  4. Step 4: Simplify right side
    3,645.72x = 10,832,840.38
  5. Step 5: Solve for x
    x = 10,832,840.38/3,645.72
  6. Step 6: Final answer
    x = 2,971.39

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1.5x scale

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.