Home / 8,261.80-12,384.60-7,277.65

Finding the Fourth Proportional to 8,261.80, 12,384.60 and 7,277.65

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Solution

The fourth proportional to 8,261.80, 12,384.60 and 7,277.65 is: 10,909.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.80 : 12,384.60 = 7,277.65 : x
  2. Step 2: Convert to fraction form
    8,261.80/12,384.60 = 7,277.65/x
  3. Step 3: Cross multiply
    8,261.80x = 12,384.60 × 7,277.65
  4. Step 4: Simplify right side
    8,261.80x = 90,130,784.19
  5. Step 5: Solve for x
    x = 90,130,784.19/8,261.80
  6. Step 6: Final answer
    x = 10,909.34

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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.