Home / 7,109.39-9,809.76-4,125.15

Finding the Fourth Proportional to 7,109.39, 9,809.76 and 4,125.15

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Solution

The fourth proportional to 7,109.39, 9,809.76 and 4,125.15 is: 5,692.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.39 : 9,809.76 = 4,125.15 : x
  2. Step 2: Convert to fraction form
    7,109.39/9,809.76 = 4,125.15/x
  3. Step 3: Cross multiply
    7,109.39x = 9,809.76 × 4,125.15
  4. Step 4: Simplify right side
    7,109.39x = 40,466,731.46
  5. Step 5: Solve for x
    x = 40,466,731.46/7,109.39
  6. Step 6: Final answer
    x = 5,692.02

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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.