Home / 8,782.16-12,122.46-5,427.54

Finding the Fourth Proportional to 8,782.16, 12,122.46 and 5,427.54

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Solution

The fourth proportional to 8,782.16, 12,122.46 and 5,427.54 is: 7,491.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.16 : 12,122.46 = 5,427.54 : x
  2. Step 2: Convert to fraction form
    8,782.16/12,122.46 = 5,427.54/x
  3. Step 3: Cross multiply
    8,782.16x = 12,122.46 × 5,427.54
  4. Step 4: Simplify right side
    8,782.16x = 65,795,136.55
  5. Step 5: Solve for x
    x = 65,795,136.55/8,782.16
  6. Step 6: Final answer
    x = 7,491.91

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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.