Home / 5,424.07-8,130.60-2,139.49

Finding the Fourth Proportional to 5,424.07, 8,130.60 and 2,139.49

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Solution

The fourth proportional to 5,424.07, 8,130.60 and 2,139.49 is: 3,207.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.07 : 8,130.60 = 2,139.49 : x
  2. Step 2: Convert to fraction form
    5,424.07/8,130.60 = 2,139.49/x
  3. Step 3: Cross multiply
    5,424.07x = 8,130.60 × 2,139.49
  4. Step 4: Simplify right side
    5,424.07x = 17,395,337.39
  5. Step 5: Solve for x
    x = 17,395,337.39/5,424.07
  6. Step 6: Final answer
    x = 3,207.06

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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.