Home / 7,390.78-11,087.80-2,461.12

Finding the Fourth Proportional to 7,390.78, 11,087.80 and 2,461.12

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Solution

The fourth proportional to 7,390.78, 11,087.80 and 2,461.12 is: 3,692.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.78 : 11,087.80 = 2,461.12 : x
  2. Step 2: Convert to fraction form
    7,390.78/11,087.80 = 2,461.12/x
  3. Step 3: Cross multiply
    7,390.78x = 11,087.80 × 2,461.12
  4. Step 4: Simplify right side
    7,390.78x = 27,288,406.34
  5. Step 5: Solve for x
    x = 27,288,406.34/7,390.78
  6. Step 6: Final answer
    x = 3,692.22

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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.