Home / 3,686.19-5,531.45-2,645.07

Finding the Fourth Proportional to 3,686.19, 5,531.45 and 2,645.07

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Solution

The fourth proportional to 3,686.19, 5,531.45 and 2,645.07 is: 3,969.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.19 : 5,531.45 = 2,645.07 : x
  2. Step 2: Convert to fraction form
    3,686.19/5,531.45 = 2,645.07/x
  3. Step 3: Cross multiply
    3,686.19x = 5,531.45 × 2,645.07
  4. Step 4: Simplify right side
    3,686.19x = 14,631,059.23
  5. Step 5: Solve for x
    x = 14,631,059.23/3,686.19
  6. Step 6: Final answer
    x = 3,969.15

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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.