Home / 8,518.64-12,778.92-3,587.36

Finding the Fourth Proportional to 8,518.64, 12,778.92 and 3,587.36

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Solution

The fourth proportional to 8,518.64, 12,778.92 and 3,587.36 is: 5,381.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.64 : 12,778.92 = 3,587.36 : x
  2. Step 2: Convert to fraction form
    8,518.64/12,778.92 = 3,587.36/x
  3. Step 3: Cross multiply
    8,518.64x = 12,778.92 × 3,587.36
  4. Step 4: Simplify right side
    8,518.64x = 45,842,586.45
  5. Step 5: Solve for x
    x = 45,842,586.45/8,518.64
  6. Step 6: Final answer
    x = 5,381.44

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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.