Home / 9,118.40-12,583.20-5,343.80

Finding the Fourth Proportional to 9,118.40, 12,583.20 and 5,343.80

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Solution

The fourth proportional to 9,118.40, 12,583.20 and 5,343.80 is: 7,374.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.40 : 12,583.20 = 5,343.80 : x
  2. Step 2: Convert to fraction form
    9,118.40/12,583.20 = 5,343.80/x
  3. Step 3: Cross multiply
    9,118.40x = 12,583.20 × 5,343.80
  4. Step 4: Simplify right side
    9,118.40x = 67,242,104.16
  5. Step 5: Solve for x
    x = 67,242,104.16/9,118.40
  6. Step 6: Final answer
    x = 7,374.33

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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.