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Finding the Fourth Proportional to 4,640.99, 6,959.99 and 1,520.15

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Solution

The fourth proportional to 4,640.99, 6,959.99 and 1,520.15 is: 2,279.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,640.99 : 6,959.99 = 1,520.15 : x
  2. Step 2: Convert to fraction form
    4,640.99/6,959.99 = 1,520.15/x
  3. Step 3: Cross multiply
    4,640.99x = 6,959.99 × 1,520.15
  4. Step 4: Simplify right side
    4,640.99x = 10,580,186.40
  5. Step 5: Solve for x
    x = 10,580,186.40/4,640.99
  6. Step 6: Final answer
    x = 2,279.73

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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.