Home / 6,618.30-9,928.89-1,938.42

Finding the Fourth Proportional to 6,618.30, 9,928.89 and 1,938.42

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Solution

The fourth proportional to 6,618.30, 9,928.89 and 1,938.42 is: 2,908.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618.30 : 9,928.89 = 1,938.42 : x
  2. Step 2: Convert to fraction form
    6,618.30/9,928.89 = 1,938.42/x
  3. Step 3: Cross multiply
    6,618.30x = 9,928.89 × 1,938.42
  4. Step 4: Simplify right side
    6,618.30x = 19,246,358.95
  5. Step 5: Solve for x
    x = 19,246,358.95/6,618.30
  6. Step 6: Final answer
    x = 2,908.05

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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.