Home / 5,139.47-7,088.36-3,459.80

Finding the Fourth Proportional to 5,139.47, 7,088.36 and 3,459.80

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Solution

The fourth proportional to 5,139.47, 7,088.36 and 3,459.80 is: 4,771.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.47 : 7,088.36 = 3,459.80 : x
  2. Step 2: Convert to fraction form
    5,139.47/7,088.36 = 3,459.80/x
  3. Step 3: Cross multiply
    5,139.47x = 7,088.36 × 3,459.80
  4. Step 4: Simplify right side
    5,139.47x = 24,524,255.19
  5. Step 5: Solve for x
    x = 24,524,255.19/5,139.47
  6. Step 6: Final answer
    x = 4,771.75

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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.