Home / 9,360.20-12,919.56-5,381.76

Finding the Fourth Proportional to 9,360.20, 12,919.56 and 5,381.76

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Solution

The fourth proportional to 9,360.20, 12,919.56 and 5,381.76 is: 7,428.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,360.20 : 12,919.56 = 5,381.76 : x
  2. Step 2: Convert to fraction form
    9,360.20/12,919.56 = 5,381.76/x
  3. Step 3: Cross multiply
    9,360.20x = 12,919.56 × 5,381.76
  4. Step 4: Simplify right side
    9,360.20x = 69,529,971.23
  5. Step 5: Solve for x
    x = 69,529,971.23/9,360.20
  6. Step 6: Final answer
    x = 7,428.26

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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.