Home / 8,417.20-11,623.08-5,278.80

Finding the Fourth Proportional to 8,417.20, 11,623.08 and 5,278.80

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Solution

The fourth proportional to 8,417.20, 11,623.08 and 5,278.80 is: 7,289.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,417.20 : 11,623.08 = 5,278.80 : x
  2. Step 2: Convert to fraction form
    8,417.20/11,623.08 = 5,278.80/x
  3. Step 3: Cross multiply
    8,417.20x = 11,623.08 × 5,278.80
  4. Step 4: Simplify right side
    8,417.20x = 61,355,914.70
  5. Step 5: Solve for x
    x = 61,355,914.70/8,417.20
  6. Step 6: Final answer
    x = 7,289.35

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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.