Home / 5,173.85-7,139.95-2,816.01

Finding the Fourth Proportional to 5,173.85, 7,139.95 and 2,816.01

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Solution

The fourth proportional to 5,173.85, 7,139.95 and 2,816.01 is: 3,886.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.85 : 7,139.95 = 2,816.01 : x
  2. Step 2: Convert to fraction form
    5,173.85/7,139.95 = 2,816.01/x
  3. Step 3: Cross multiply
    5,173.85x = 7,139.95 × 2,816.01
  4. Step 4: Simplify right side
    5,173.85x = 20,106,163.56
  5. Step 5: Solve for x
    x = 20,106,163.56/5,173.85
  6. Step 6: Final answer
    x = 3,886.11

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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.