Home / 8,358.13-12,530.20-3,431.30

Finding the Fourth Proportional to 8,358.13, 12,530.20 and 3,431.30

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Solution

The fourth proportional to 8,358.13, 12,530.20 and 3,431.30 is: 5,144.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,358.13 : 12,530.20 = 3,431.30 : x
  2. Step 2: Convert to fraction form
    8,358.13/12,530.20 = 3,431.30/x
  3. Step 3: Cross multiply
    8,358.13x = 12,530.20 × 3,431.30
  4. Step 4: Simplify right side
    8,358.13x = 42,994,875.26
  5. Step 5: Solve for x
    x = 42,994,875.26/8,358.13
  6. Step 6: Final answer
    x = 5,144.08

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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.