Home / 6,118.40-9,178.95-1,958.75

Finding the Fourth Proportional to 6,118.40, 9,178.95 and 1,958.75

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Solution

The fourth proportional to 6,118.40, 9,178.95 and 1,958.75 is: 2,938.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,118.40 : 9,178.95 = 1,958.75 : x
  2. Step 2: Convert to fraction form
    6,118.40/9,178.95 = 1,958.75/x
  3. Step 3: Cross multiply
    6,118.40x = 9,178.95 × 1,958.75
  4. Step 4: Simplify right side
    6,118.40x = 17,979,264.18
  5. Step 5: Solve for x
    x = 17,979,264.18/6,118.40
  6. Step 6: Final answer
    x = 2,938.56

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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.