Home / 7,431.90-11,139.75-3,048.18

Finding the Fourth Proportional to 7,431.90, 11,139.75 and 3,048.18

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Solution

The fourth proportional to 7,431.90, 11,139.75 and 3,048.18 is: 4,568.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.90 : 11,139.75 = 3,048.18 : x
  2. Step 2: Convert to fraction form
    7,431.90/11,139.75 = 3,048.18/x
  3. Step 3: Cross multiply
    7,431.90x = 11,139.75 × 3,048.18
  4. Step 4: Simplify right side
    7,431.90x = 33,955,963.16
  5. Step 5: Solve for x
    x = 33,955,963.16/7,431.90
  6. Step 6: Final answer
    x = 4,568.95

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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.