Home / 5,115.36-7,666.75-2,648.77

Finding the Fourth Proportional to 5,115.36, 7,666.75 and 2,648.77

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Solution

The fourth proportional to 5,115.36, 7,666.75 and 2,648.77 is: 3,969.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.36 : 7,666.75 = 2,648.77 : x
  2. Step 2: Convert to fraction form
    5,115.36/7,666.75 = 2,648.77/x
  3. Step 3: Cross multiply
    5,115.36x = 7,666.75 × 2,648.77
  4. Step 4: Simplify right side
    5,115.36x = 20,307,457.40
  5. Step 5: Solve for x
    x = 20,307,457.40/5,115.36
  6. Step 6: Final answer
    x = 3,969.90

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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.