Home / 3,639.34-5,015.63-2,642.89

Finding the Fourth Proportional to 3,639.34, 5,015.63 and 2,642.89

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Solution

The fourth proportional to 3,639.34, 5,015.63 and 2,642.89 is: 3,642.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.34 : 5,015.63 = 2,642.89 : x
  2. Step 2: Convert to fraction form
    3,639.34/5,015.63 = 2,642.89/x
  3. Step 3: Cross multiply
    3,639.34x = 5,015.63 × 2,642.89
  4. Step 4: Simplify right side
    3,639.34x = 13,255,754.41
  5. Step 5: Solve for x
    x = 13,255,754.41/3,639.34
  6. Step 6: Final answer
    x = 3,642.35

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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.