Home / 8,118.42-11,205.54-7,277.64

Finding the Fourth Proportional to 8,118.42, 11,205.54 and 7,277.64

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Solution

The fourth proportional to 8,118.42, 11,205.54 and 7,277.64 is: 10,045.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.42 : 11,205.54 = 7,277.64 : x
  2. Step 2: Convert to fraction form
    8,118.42/11,205.54 = 7,277.64/x
  3. Step 3: Cross multiply
    8,118.42x = 11,205.54 × 7,277.64
  4. Step 4: Simplify right side
    8,118.42x = 81,549,886.13
  5. Step 5: Solve for x
    x = 81,549,886.13/8,118.42
  6. Step 6: Final answer
    x = 10,045.04

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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.