Home / 3,188.80-4,783.14-1,314.28

Finding the Fourth Proportional to 3,188.80, 4,783.14 and 1,314.28

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Solution

The fourth proportional to 3,188.80, 4,783.14 and 1,314.28 is: 1,971.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.80 : 4,783.14 = 1,314.28 : x
  2. Step 2: Convert to fraction form
    3,188.80/4,783.14 = 1,314.28/x
  3. Step 3: Cross multiply
    3,188.80x = 4,783.14 × 1,314.28
  4. Step 4: Simplify right side
    3,188.80x = 6,286,385.24
  5. Step 5: Solve for x
    x = 6,286,385.24/3,188.80
  6. Step 6: Final answer
    x = 1,971.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.