Home / 7,140.28-9,855.66-4,350.84

Finding the Fourth Proportional to 7,140.28, 9,855.66 and 4,350.84

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Solution

The fourth proportional to 7,140.28, 9,855.66 and 4,350.84 is: 6,005.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.28 : 9,855.66 = 4,350.84 : x
  2. Step 2: Convert to fraction form
    7,140.28/9,855.66 = 4,350.84/x
  3. Step 3: Cross multiply
    7,140.28x = 9,855.66 × 4,350.84
  4. Step 4: Simplify right side
    7,140.28x = 42,880,399.75
  5. Step 5: Solve for x
    x = 42,880,399.75/7,140.28
  6. Step 6: Final answer
    x = 6,005.42

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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.