Home / 7,140.11-9,852.11-4,156.91

Finding the Fourth Proportional to 7,140.11, 9,852.11 and 4,156.91

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Solution

The fourth proportional to 7,140.11, 9,852.11 and 4,156.91 is: 5,735.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.11 : 9,852.11 = 4,156.91 : x
  2. Step 2: Convert to fraction form
    7,140.11/9,852.11 = 4,156.91/x
  3. Step 3: Cross multiply
    7,140.11x = 9,852.11 × 4,156.91
  4. Step 4: Simplify right side
    7,140.11x = 40,954,264.54
  5. Step 5: Solve for x
    x = 40,954,264.54/7,140.11
  6. Step 6: Final answer
    x = 5,735.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.