Home / 4,257.60-6,386.40-2,961.60

Finding the Fourth Proportional to 4,257.60, 6,386.40 and 2,961.60

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Solution

The fourth proportional to 4,257.60, 6,386.40 and 2,961.60 is: 4,442.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,257.60 : 6,386.40 = 2,961.60 : x
  2. Step 2: Convert to fraction form
    4,257.60/6,386.40 = 2,961.60/x
  3. Step 3: Cross multiply
    4,257.60x = 6,386.40 × 2,961.60
  4. Step 4: Simplify right side
    4,257.60x = 18,913,962.24
  5. Step 5: Solve for x
    x = 18,913,962.24/4,257.60
  6. Step 6: Final answer
    x = 4,442.40

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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.