Home / 8,291.38-12,429.25-4,127.45

Finding the Fourth Proportional to 8,291.38, 12,429.25 and 4,127.45

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Solution

The fourth proportional to 8,291.38, 12,429.25 and 4,127.45 is: 6,187.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,291.38 : 12,429.25 = 4,127.45 : x
  2. Step 2: Convert to fraction form
    8,291.38/12,429.25 = 4,127.45/x
  3. Step 3: Cross multiply
    8,291.38x = 12,429.25 × 4,127.45
  4. Step 4: Simplify right side
    8,291.38x = 51,301,035.45
  5. Step 5: Solve for x
    x = 51,301,035.45/8,291.38
  6. Step 6: Final answer
    x = 6,187.28

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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.