Home / 3,188.28-4,778.38-1,802.40

Finding the Fourth Proportional to 3,188.28, 4,778.38 and 1,802.40

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Solution

The fourth proportional to 3,188.28, 4,778.38 and 1,802.40 is: 2,701.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.28 : 4,778.38 = 1,802.40 : x
  2. Step 2: Convert to fraction form
    3,188.28/4,778.38 = 1,802.40/x
  3. Step 3: Cross multiply
    3,188.28x = 4,778.38 × 1,802.40
  4. Step 4: Simplify right side
    3,188.28x = 8,612,563.32
  5. Step 5: Solve for x
    x = 8,612,563.32/3,188.28
  6. Step 6: Final answer
    x = 2,701.32

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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.