Home / 6,429.36-8,864.88-4,188.06

Finding the Fourth Proportional to 6,429.36, 8,864.88 and 4,188.06

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Solution

The fourth proportional to 6,429.36, 8,864.88 and 4,188.06 is: 5,774.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.36 : 8,864.88 = 4,188.06 : x
  2. Step 2: Convert to fraction form
    6,429.36/8,864.88 = 4,188.06/x
  3. Step 3: Cross multiply
    6,429.36x = 8,864.88 × 4,188.06
  4. Step 4: Simplify right side
    6,429.36x = 37,126,649.33
  5. Step 5: Solve for x
    x = 37,126,649.33/6,429.36
  6. Step 6: Final answer
    x = 5,774.55

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1.5x scale

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.