Home / 6,442.20-9,666.40-3,153.50

Finding the Fourth Proportional to 6,442.20, 9,666.40 and 3,153.50

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Solution

The fourth proportional to 6,442.20, 9,666.40 and 3,153.50 is: 4,731.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,442.20 : 9,666.40 = 3,153.50 : x
  2. Step 2: Convert to fraction form
    6,442.20/9,666.40 = 3,153.50/x
  3. Step 3: Cross multiply
    6,442.20x = 9,666.40 × 3,153.50
  4. Step 4: Simplify right side
    6,442.20x = 30,482,992.40
  5. Step 5: Solve for x
    x = 30,482,992.40/6,442.20
  6. Step 6: Final answer
    x = 4,731.77

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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.