Home / 7,072.11-9,752.81-5,390.55

Finding the Fourth Proportional to 7,072.11, 9,752.81 and 5,390.55

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Solution

The fourth proportional to 7,072.11, 9,752.81 and 5,390.55 is: 7,433.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,072.11 : 9,752.81 = 5,390.55 : x
  2. Step 2: Convert to fraction form
    7,072.11/9,752.81 = 5,390.55/x
  3. Step 3: Cross multiply
    7,072.11x = 9,752.81 × 5,390.55
  4. Step 4: Simplify right side
    7,072.11x = 52,572,982.99
  5. Step 5: Solve for x
    x = 52,572,982.99/7,072.11
  6. Step 6: Final answer
    x = 7,433.85

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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.