Home / 8,515.30-12,769.54-5,012.40

Finding the Fourth Proportional to 8,515.30, 12,769.54 and 5,012.40

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Solution

The fourth proportional to 8,515.30, 12,769.54 and 5,012.40 is: 7,516.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.30 : 12,769.54 = 5,012.40 : x
  2. Step 2: Convert to fraction form
    8,515.30/12,769.54 = 5,012.40/x
  3. Step 3: Cross multiply
    8,515.30x = 12,769.54 × 5,012.40
  4. Step 4: Simplify right side
    8,515.30x = 64,006,042.30
  5. Step 5: Solve for x
    x = 64,006,042.30/8,515.30
  6. Step 6: Final answer
    x = 7,516.59

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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.