Home / 8,811.48-12,159.87-5,274.69

Finding the Fourth Proportional to 8,811.48, 12,159.87 and 5,274.69

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Solution

The fourth proportional to 8,811.48, 12,159.87 and 5,274.69 is: 7,279.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.48 : 12,159.87 = 5,274.69 : x
  2. Step 2: Convert to fraction form
    8,811.48/12,159.87 = 5,274.69/x
  3. Step 3: Cross multiply
    8,811.48x = 12,159.87 × 5,274.69
  4. Step 4: Simplify right side
    8,811.48x = 64,139,508.98
  5. Step 5: Solve for x
    x = 64,139,508.98/8,811.48
  6. Step 6: Final answer
    x = 7,279.09

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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.