Home / 7,140.87-9,850.32-4,156.36

Finding the Fourth Proportional to 7,140.87, 9,850.32 and 4,156.36

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Solution

The fourth proportional to 7,140.87, 9,850.32 and 4,156.36 is: 5,733.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.87 : 9,850.32 = 4,156.36 : x
  2. Step 2: Convert to fraction form
    7,140.87/9,850.32 = 4,156.36/x
  3. Step 3: Cross multiply
    7,140.87x = 9,850.32 × 4,156.36
  4. Step 4: Simplify right side
    7,140.87x = 40,941,476.04
  5. Step 5: Solve for x
    x = 40,941,476.04/7,140.87
  6. Step 6: Final answer
    x = 5,733.40

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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.