Home / 4,380.78-6,563.88-1,911.90

Finding the Fourth Proportional to 4,380.78, 6,563.88 and 1,911.90

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Solution

The fourth proportional to 4,380.78, 6,563.88 and 1,911.90 is: 2,864.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,380.78 : 6,563.88 = 1,911.90 : x
  2. Step 2: Convert to fraction form
    4,380.78/6,563.88 = 1,911.90/x
  3. Step 3: Cross multiply
    4,380.78x = 6,563.88 × 1,911.90
  4. Step 4: Simplify right side
    4,380.78x = 12,549,482.17
  5. Step 5: Solve for x
    x = 12,549,482.17/4,380.78
  6. Step 6: Final answer
    x = 2,864.67

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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.