Home / 8,585.75-11,855.67-6,457.60

Finding the Fourth Proportional to 8,585.75, 11,855.67 and 6,457.60

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Solution

The fourth proportional to 8,585.75, 11,855.67 and 6,457.60 is: 8,917.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,585.75 : 11,855.67 = 6,457.60 : x
  2. Step 2: Convert to fraction form
    8,585.75/11,855.67 = 6,457.60/x
  3. Step 3: Cross multiply
    8,585.75x = 11,855.67 × 6,457.60
  4. Step 4: Simplify right side
    8,585.75x = 76,559,131.85
  5. Step 5: Solve for x
    x = 76,559,131.85/8,585.75
  6. Step 6: Final answer
    x = 8,917.00

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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.