Home / 2,778.34-4,168.32-2,289.10

Finding the Fourth Proportional to 2,778.34, 4,168.32 and 2,289.10

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Solution

The fourth proportional to 2,778.34, 4,168.32 and 2,289.10 is: 3,434.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.34 : 4,168.32 = 2,289.10 : x
  2. Step 2: Convert to fraction form
    2,778.34/4,168.32 = 2,289.10/x
  3. Step 3: Cross multiply
    2,778.34x = 4,168.32 × 2,289.10
  4. Step 4: Simplify right side
    2,778.34x = 9,541,701.31
  5. Step 5: Solve for x
    x = 9,541,701.31/2,778.34
  6. Step 6: Final answer
    x = 3,434.32

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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.