Home / 3,686.63-5,531.45-1,605.56

Finding the Fourth Proportional to 3,686.63, 5,531.45 and 1,605.56

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Solution

The fourth proportional to 3,686.63, 5,531.45 and 1,605.56 is: 2,408.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.63 : 5,531.45 = 1,605.56 : x
  2. Step 2: Convert to fraction form
    3,686.63/5,531.45 = 1,605.56/x
  3. Step 3: Cross multiply
    3,686.63x = 5,531.45 × 1,605.56
  4. Step 4: Simplify right side
    3,686.63x = 8,881,039.18
  5. Step 5: Solve for x
    x = 8,881,039.18/3,686.63
  6. Step 6: Final answer
    x = 2,408.99

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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.