Home / 6,429-8,865.93-4,192.59

Finding the Fourth Proportional to 6,429, 8,865.93 and 4,192.59

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Solution

The fourth proportional to 6,429, 8,865.93 and 4,192.59 is: 5,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429 : 8,865.93 = 4,192.59 : x
  2. Step 2: Convert to fraction form
    6,429/8,865.93 = 4,192.59/x
  3. Step 3: Cross multiply
    6,429x = 8,865.93 × 4,192.59
  4. Step 4: Simplify right side
    6,429x = 37,171,209.46
  5. Step 5: Solve for x
    x = 37,171,209.46/6,429
  6. Step 6: Final answer
    x = 5,781.80

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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.