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Finding the Fourth Proportional to 4,640.59, 6,960.80 and 1,130.63

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Solution

The fourth proportional to 4,640.59, 6,960.80 and 1,130.63 is: 1,695.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,640.59 : 6,960.80 = 1,130.63 : x
  2. Step 2: Convert to fraction form
    4,640.59/6,960.80 = 1,130.63/x
  3. Step 3: Cross multiply
    4,640.59x = 6,960.80 × 1,130.63
  4. Step 4: Simplify right side
    4,640.59x = 7,870,057.33
  5. Step 5: Solve for x
    x = 7,870,057.33/4,640.59
  6. Step 6: Final answer
    x = 1,695.92

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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.