Home / 8,911.35-12,296.59-5,135.74

Finding the Fourth Proportional to 8,911.35, 12,296.59 and 5,135.74

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Solution

The fourth proportional to 8,911.35, 12,296.59 and 5,135.74 is: 7,086.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.35 : 12,296.59 = 5,135.74 : x
  2. Step 2: Convert to fraction form
    8,911.35/12,296.59 = 5,135.74/x
  3. Step 3: Cross multiply
    8,911.35x = 12,296.59 × 5,135.74
  4. Step 4: Simplify right side
    8,911.35x = 63,152,089.13
  5. Step 5: Solve for x
    x = 63,152,089.13/8,911.35
  6. Step 6: Final answer
    x = 7,086.70

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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.