Home / 7,237.20-9,988.87-5,540.21

Finding the Fourth Proportional to 7,237.20, 9,988.87 and 5,540.21

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Solution

The fourth proportional to 7,237.20, 9,988.87 and 5,540.21 is: 7,646.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,237.20 : 9,988.87 = 5,540.21 : x
  2. Step 2: Convert to fraction form
    7,237.20/9,988.87 = 5,540.21/x
  3. Step 3: Cross multiply
    7,237.20x = 9,988.87 × 5,540.21
  4. Step 4: Simplify right side
    7,237.20x = 55,340,477.70
  5. Step 5: Solve for x
    x = 55,340,477.70/7,237.20
  6. Step 6: Final answer
    x = 7,646.67

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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.