Home / 3,720.29-5,577.23-1,638.71

Finding the Fourth Proportional to 3,720.29, 5,577.23 and 1,638.71

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Solution

The fourth proportional to 3,720.29, 5,577.23 and 1,638.71 is: 2,456.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.29 : 5,577.23 = 1,638.71 : x
  2. Step 2: Convert to fraction form
    3,720.29/5,577.23 = 1,638.71/x
  3. Step 3: Cross multiply
    3,720.29x = 5,577.23 × 1,638.71
  4. Step 4: Simplify right side
    3,720.29x = 9,139,482.47
  5. Step 5: Solve for x
    x = 9,139,482.47/3,720.29
  6. Step 6: Final answer
    x = 2,456.66

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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.