Home / 8,261.60-12,384.30-7,386.80

Finding the Fourth Proportional to 8,261.60, 12,384.30 and 7,386.80

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Solution

The fourth proportional to 8,261.60, 12,384.30 and 7,386.80 is: 11,072.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.60 : 12,384.30 = 7,386.80 : x
  2. Step 2: Convert to fraction form
    8,261.60/12,384.30 = 7,386.80/x
  3. Step 3: Cross multiply
    8,261.60x = 12,384.30 × 7,386.80
  4. Step 4: Simplify right side
    8,261.60x = 91,480,347.24
  5. Step 5: Solve for x
    x = 91,480,347.24/8,261.60
  6. Step 6: Final answer
    x = 11,072.96

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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.