Home / 7,909.30-10,914.51-5,072.68

Finding the Fourth Proportional to 7,909.30, 10,914.51 and 5,072.68

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Solution

The fourth proportional to 7,909.30, 10,914.51 and 5,072.68 is: 7,000.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.30 : 10,914.51 = 5,072.68 : x
  2. Step 2: Convert to fraction form
    7,909.30/10,914.51 = 5,072.68/x
  3. Step 3: Cross multiply
    7,909.30x = 10,914.51 × 5,072.68
  4. Step 4: Simplify right side
    7,909.30x = 55,365,816.59
  5. Step 5: Solve for x
    x = 55,365,816.59/7,909.30
  6. Step 6: Final answer
    x = 7,000.09

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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.