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Finding the Fourth Proportional to 8,393.80, 12,585.90 and 3,457.57

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Solution

The fourth proportional to 8,393.80, 12,585.90 and 3,457.57 is: 5,184.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393.80 : 12,585.90 = 3,457.57 : x
  2. Step 2: Convert to fraction form
    8,393.80/12,585.90 = 3,457.57/x
  3. Step 3: Cross multiply
    8,393.80x = 12,585.90 × 3,457.57
  4. Step 4: Simplify right side
    8,393.80x = 43,516,630.26
  5. Step 5: Solve for x
    x = 43,516,630.26/8,393.80
  6. Step 6: Final answer
    x = 5,184.38

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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.