Home / 5,080.50-7,011.36-2,985.30

Finding the Fourth Proportional to 5,080.50, 7,011.36 and 2,985.30

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Solution

The fourth proportional to 5,080.50, 7,011.36 and 2,985.30 is: 4,119.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,080.50 : 7,011.36 = 2,985.30 : x
  2. Step 2: Convert to fraction form
    5,080.50/7,011.36 = 2,985.30/x
  3. Step 3: Cross multiply
    5,080.50x = 7,011.36 × 2,985.30
  4. Step 4: Simplify right side
    5,080.50x = 20,931,013.01
  5. Step 5: Solve for x
    x = 20,931,013.01/5,080.50
  6. Step 6: Final answer
    x = 4,119.87

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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.