Home / 5,173.13-7,140.14-3,078.47

Finding the Fourth Proportional to 5,173.13, 7,140.14 and 3,078.47

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Solution

The fourth proportional to 5,173.13, 7,140.14 and 3,078.47 is: 4,249.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.13 : 7,140.14 = 3,078.47 : x
  2. Step 2: Convert to fraction form
    5,173.13/7,140.14 = 3,078.47/x
  3. Step 3: Cross multiply
    5,173.13x = 7,140.14 × 3,078.47
  4. Step 4: Simplify right side
    5,173.13x = 21,980,655.69
  5. Step 5: Solve for x
    x = 21,980,655.69/5,173.13
  6. Step 6: Final answer
    x = 4,249.01

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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.