Home / 7,905.45-10,909.23-4,548.78

Finding the Fourth Proportional to 7,905.45, 10,909.23 and 4,548.78

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Solution

The fourth proportional to 7,905.45, 10,909.23 and 4,548.78 is: 6,277.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.45 : 10,909.23 = 4,548.78 : x
  2. Step 2: Convert to fraction form
    7,905.45/10,909.23 = 4,548.78/x
  3. Step 3: Cross multiply
    7,905.45x = 10,909.23 × 4,548.78
  4. Step 4: Simplify right side
    7,905.45x = 49,623,687.24
  5. Step 5: Solve for x
    x = 49,623,687.24/7,905.45
  6. Step 6: Final answer
    x = 6,277.15

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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.