Home / 8,456.42-11,669.63-4,679.75

Finding the Fourth Proportional to 8,456.42, 11,669.63 and 4,679.75

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Solution

The fourth proportional to 8,456.42, 11,669.63 and 4,679.75 is: 6,457.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456.42 : 11,669.63 = 4,679.75 : x
  2. Step 2: Convert to fraction form
    8,456.42/11,669.63 = 4,679.75/x
  3. Step 3: Cross multiply
    8,456.42x = 11,669.63 × 4,679.75
  4. Step 4: Simplify right side
    8,456.42x = 54,610,869.25
  5. Step 5: Solve for x
    x = 54,610,869.25/8,456.42
  6. Step 6: Final answer
    x = 6,457.92

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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.