Home / 9,266.42-12,787.43-5,178.26

Finding the Fourth Proportional to 9,266.42, 12,787.43 and 5,178.26

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Solution

The fourth proportional to 9,266.42, 12,787.43 and 5,178.26 is: 7,145.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,266.42 : 12,787.43 = 5,178.26 : x
  2. Step 2: Convert to fraction form
    9,266.42/12,787.43 = 5,178.26/x
  3. Step 3: Cross multiply
    9,266.42x = 12,787.43 × 5,178.26
  4. Step 4: Simplify right side
    9,266.42x = 66,216,626.80
  5. Step 5: Solve for x
    x = 66,216,626.80/9,266.42
  6. Step 6: Final answer
    x = 7,145.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.