Home / 8,758.40-12,086.96-4,779.76

Finding the Fourth Proportional to 8,758.40, 12,086.96 and 4,779.76

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Solution

The fourth proportional to 8,758.40, 12,086.96 and 4,779.76 is: 6,596.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.40 : 12,086.96 = 4,779.76 : x
  2. Step 2: Convert to fraction form
    8,758.40/12,086.96 = 4,779.76/x
  3. Step 3: Cross multiply
    8,758.40x = 12,086.96 × 4,779.76
  4. Step 4: Simplify right side
    8,758.40x = 57,772,767.93
  5. Step 5: Solve for x
    x = 57,772,767.93/8,758.40
  6. Step 6: Final answer
    x = 6,596.27

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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.