Home / 7,771.80-11,637.36-7,130.28

Finding the Fourth Proportional to 7,771.80, 11,637.36 and 7,130.28

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Solution

The fourth proportional to 7,771.80, 11,637.36 and 7,130.28 is: 10,676.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,771.80 : 11,637.36 = 7,130.28 : x
  2. Step 2: Convert to fraction form
    7,771.80/11,637.36 = 7,130.28/x
  3. Step 3: Cross multiply
    7,771.80x = 11,637.36 × 7,130.28
  4. Step 4: Simplify right side
    7,771.80x = 82,977,635.26
  5. Step 5: Solve for x
    x = 82,977,635.26/7,771.80
  6. Step 6: Final answer
    x = 10,676.76

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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.