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Finding the Fourth Proportional to 2,193.98, 3,289.35 and 877.32

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Solution

The fourth proportional to 2,193.98, 3,289.35 and 877.32 is: 1,315.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,193.98 : 3,289.35 = 877.32 : x
  2. Step 2: Convert to fraction form
    2,193.98/3,289.35 = 877.32/x
  3. Step 3: Cross multiply
    2,193.98x = 3,289.35 × 877.32
  4. Step 4: Simplify right side
    2,193.98x = 2,885,812.54
  5. Step 5: Solve for x
    x = 2,885,812.54/2,193.98
  6. Step 6: Final answer
    x = 1,315.34

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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.