Home / 5,121.20-7,681.95-2,001.08

Finding the Fourth Proportional to 5,121.20, 7,681.95 and 2,001.08

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Solution

The fourth proportional to 5,121.20, 7,681.95 and 2,001.08 is: 3,001.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.20 : 7,681.95 = 2,001.08 : x
  2. Step 2: Convert to fraction form
    5,121.20/7,681.95 = 2,001.08/x
  3. Step 3: Cross multiply
    5,121.20x = 7,681.95 × 2,001.08
  4. Step 4: Simplify right side
    5,121.20x = 15,372,150.59
  5. Step 5: Solve for x
    x = 15,372,150.59/5,121.20
  6. Step 6: Final answer
    x = 3,001.67

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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.