Home / 5,639.90-7,783.95-3,402.09

Finding the Fourth Proportional to 5,639.90, 7,783.95 and 3,402.09

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Solution

The fourth proportional to 5,639.90, 7,783.95 and 3,402.09 is: 4,695.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.90 : 7,783.95 = 3,402.09 : x
  2. Step 2: Convert to fraction form
    5,639.90/7,783.95 = 3,402.09/x
  3. Step 3: Cross multiply
    5,639.90x = 7,783.95 × 3,402.09
  4. Step 4: Simplify right side
    5,639.90x = 26,481,751.92
  5. Step 5: Solve for x
    x = 26,481,751.92/5,639.90
  6. Step 6: Final answer
    x = 4,695.43

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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.