Home / 7,510.31-11,265.87-3,128.21

Finding the Fourth Proportional to 7,510.31, 11,265.87 and 3,128.21

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Solution

The fourth proportional to 7,510.31, 11,265.87 and 3,128.21 is: 4,692.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,510.31 : 11,265.87 = 3,128.21 : x
  2. Step 2: Convert to fraction form
    7,510.31/11,265.87 = 3,128.21/x
  3. Step 3: Cross multiply
    7,510.31x = 11,265.87 × 3,128.21
  4. Step 4: Simplify right side
    7,510.31x = 35,242,007.19
  5. Step 5: Solve for x
    x = 35,242,007.19/7,510.31
  6. Step 6: Final answer
    x = 4,692.48

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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.