Home / 8,417.28-11,623.70-5,278.94

Finding the Fourth Proportional to 8,417.28, 11,623.70 and 5,278.94

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Solution

The fourth proportional to 8,417.28, 11,623.70 and 5,278.94 is: 7,289.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,417.28 : 11,623.70 = 5,278.94 : x
  2. Step 2: Convert to fraction form
    8,417.28/11,623.70 = 5,278.94/x
  3. Step 3: Cross multiply
    8,417.28x = 11,623.70 × 5,278.94
  4. Step 4: Simplify right side
    8,417.28x = 61,360,813.55
  5. Step 5: Solve for x
    x = 61,360,813.55/8,417.28
  6. Step 6: Final answer
    x = 7,289.86

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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.