Home / 5,639.22-7,782.17-3,400.65

Finding the Fourth Proportional to 5,639.22, 7,782.17 and 3,400.65

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Solution

The fourth proportional to 5,639.22, 7,782.17 and 3,400.65 is: 4,692.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.22 : 7,782.17 = 3,400.65 : x
  2. Step 2: Convert to fraction form
    5,639.22/7,782.17 = 3,400.65/x
  3. Step 3: Cross multiply
    5,639.22x = 7,782.17 × 3,400.65
  4. Step 4: Simplify right side
    5,639.22x = 26,464,419.41
  5. Step 5: Solve for x
    x = 26,464,419.41/5,639.22
  6. Step 6: Final answer
    x = 4,692.92

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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.