Home / 7,840.45-11,760.36-2,909.98

Finding the Fourth Proportional to 7,840.45, 11,760.36 and 2,909.98

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Solution

The fourth proportional to 7,840.45, 11,760.36 and 2,909.98 is: 4,364.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.45 : 11,760.36 = 2,909.98 : x
  2. Step 2: Convert to fraction form
    7,840.45/11,760.36 = 2,909.98/x
  3. Step 3: Cross multiply
    7,840.45x = 11,760.36 × 2,909.98
  4. Step 4: Simplify right side
    7,840.45x = 34,222,412.39
  5. Step 5: Solve for x
    x = 34,222,412.39/7,840.45
  6. Step 6: Final answer
    x = 4,364.85

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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.