Home / 3,188.81-4,400.55-1,772.45

Finding the Fourth Proportional to 3,188.81, 4,400.55 and 1,772.45

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Solution

The fourth proportional to 3,188.81, 4,400.55 and 1,772.45 is: 2,445.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.81 : 4,400.55 = 1,772.45 : x
  2. Step 2: Convert to fraction form
    3,188.81/4,400.55 = 1,772.45/x
  3. Step 3: Cross multiply
    3,188.81x = 4,400.55 × 1,772.45
  4. Step 4: Simplify right side
    3,188.81x = 7,799,775.39
  5. Step 5: Solve for x
    x = 7,799,775.39/3,188.81
  6. Step 6: Final answer
    x = 2,445.98

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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.