Home / 7,110.40-9,809.76-4,126

Finding the Fourth Proportional to 7,110.40, 9,809.76 and 4,126

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Solution

The fourth proportional to 7,110.40, 9,809.76 and 4,126 is: 5,692.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,110.40 : 9,809.76 = 4,126 : x
  2. Step 2: Convert to fraction form
    7,110.40/9,809.76 = 4,126/x
  3. Step 3: Cross multiply
    7,110.40x = 9,809.76 × 4,126
  4. Step 4: Simplify right side
    7,110.40x = 40,475,069.76
  5. Step 5: Solve for x
    x = 40,475,069.76/7,110.40
  6. Step 6: Final answer
    x = 5,692.38

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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.