Home / 8,257.60-12,390.81-3,875.10

Finding the Fourth Proportional to 8,257.60, 12,390.81 and 3,875.10

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Solution

The fourth proportional to 8,257.60, 12,390.81 and 3,875.10 is: 5,814.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,257.60 : 12,390.81 = 3,875.10 : x
  2. Step 2: Convert to fraction form
    8,257.60/12,390.81 = 3,875.10/x
  3. Step 3: Cross multiply
    8,257.60x = 12,390.81 × 3,875.10
  4. Step 4: Simplify right side
    8,257.60x = 48,015,588.63
  5. Step 5: Solve for x
    x = 48,015,588.63/8,257.60
  6. Step 6: Final answer
    x = 5,814.71

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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.