Home / 7,180.19-9,911.70-6,731.81

Finding the Fourth Proportional to 7,180.19, 9,911.70 and 6,731.81

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Solution

The fourth proportional to 7,180.19, 9,911.70 and 6,731.81 is: 9,292.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.19 : 9,911.70 = 6,731.81 : x
  2. Step 2: Convert to fraction form
    7,180.19/9,911.70 = 6,731.81/x
  3. Step 3: Cross multiply
    7,180.19x = 9,911.70 × 6,731.81
  4. Step 4: Simplify right side
    7,180.19x = 66,723,681.18
  5. Step 5: Solve for x
    x = 66,723,681.18/7,180.19
  6. Step 6: Final answer
    x = 9,292.75

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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.