Home / 5,139.86-7,090.74-3,150.29

Finding the Fourth Proportional to 5,139.86, 7,090.74 and 3,150.29

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Solution

The fourth proportional to 5,139.86, 7,090.74 and 3,150.29 is: 4,346.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.86 : 7,090.74 = 3,150.29 : x
  2. Step 2: Convert to fraction form
    5,139.86/7,090.74 = 3,150.29/x
  3. Step 3: Cross multiply
    5,139.86x = 7,090.74 × 3,150.29
  4. Step 4: Simplify right side
    5,139.86x = 22,337,905.04
  5. Step 5: Solve for x
    x = 22,337,905.04/5,139.86
  6. Step 6: Final answer
    x = 4,346.02

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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.