Home / 5,637.06-7,778.54-3,118.78

Finding the Fourth Proportional to 5,637.06, 7,778.54 and 3,118.78

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Solution

The fourth proportional to 5,637.06, 7,778.54 and 3,118.78 is: 4,303.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,637.06 : 7,778.54 = 3,118.78 : x
  2. Step 2: Convert to fraction form
    5,637.06/7,778.54 = 3,118.78/x
  3. Step 3: Cross multiply
    5,637.06x = 7,778.54 × 3,118.78
  4. Step 4: Simplify right side
    5,637.06x = 24,259,554.98
  5. Step 5: Solve for x
    x = 24,259,554.98/5,637.06
  6. Step 6: Final answer
    x = 4,303.58

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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.