Home / 4,905.72-7,358.88-1,618.83

Finding the Fourth Proportional to 4,905.72, 7,358.88 and 1,618.83

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Solution

The fourth proportional to 4,905.72, 7,358.88 and 1,618.83 is: 2,428.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.72 : 7,358.88 = 1,618.83 : x
  2. Step 2: Convert to fraction form
    4,905.72/7,358.88 = 1,618.83/x
  3. Step 3: Cross multiply
    4,905.72x = 7,358.88 × 1,618.83
  4. Step 4: Simplify right side
    4,905.72x = 11,912,775.71
  5. Step 5: Solve for x
    x = 11,912,775.71/4,905.72
  6. Step 6: Final answer
    x = 2,428.34

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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.