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Finding the Fourth Proportional to 8,756.99, 13,135.50 and 2,913.65

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Solution

The fourth proportional to 8,756.99, 13,135.50 and 2,913.65 is: 4,370.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.99 : 13,135.50 = 2,913.65 : x
  2. Step 2: Convert to fraction form
    8,756.99/13,135.50 = 2,913.65/x
  3. Step 3: Cross multiply
    8,756.99x = 13,135.50 × 2,913.65
  4. Step 4: Simplify right side
    8,756.99x = 38,272,249.58
  5. Step 5: Solve for x
    x = 38,272,249.58/8,756.99
  6. Step 6: Final answer
    x = 4,370.48

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.