Home / 7,515.73-11,271.77-3,130.79

Finding the Fourth Proportional to 7,515.73, 11,271.77 and 3,130.79

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Solution

The fourth proportional to 7,515.73, 11,271.77 and 3,130.79 is: 4,695.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,515.73 : 11,271.77 = 3,130.79 : x
  2. Step 2: Convert to fraction form
    7,515.73/11,271.77 = 3,130.79/x
  3. Step 3: Cross multiply
    7,515.73x = 11,271.77 × 3,130.79
  4. Step 4: Simplify right side
    7,515.73x = 35,289,557.32
  5. Step 5: Solve for x
    x = 35,289,557.32/7,515.73
  6. Step 6: Final answer
    x = 4,695.43

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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.