Home / 7,140.55-10,705.06-2,983.75

Finding the Fourth Proportional to 7,140.55, 10,705.06 and 2,983.75

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Solution

The fourth proportional to 7,140.55, 10,705.06 and 2,983.75 is: 4,473.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.55 : 10,705.06 = 2,983.75 : x
  2. Step 2: Convert to fraction form
    7,140.55/10,705.06 = 2,983.75/x
  3. Step 3: Cross multiply
    7,140.55x = 10,705.06 × 2,983.75
  4. Step 4: Simplify right side
    7,140.55x = 31,941,222.78
  5. Step 5: Solve for x
    x = 31,941,222.78/7,140.55
  6. Step 6: Final answer
    x = 4,473.22

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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.