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Finding the Fourth Proportional to 6,159.63, 8,490.30 and 4,812.88

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Solution

The fourth proportional to 6,159.63, 8,490.30 and 4,812.88 is: 6,633.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,159.63 : 8,490.30 = 4,812.88 : x
  2. Step 2: Convert to fraction form
    6,159.63/8,490.30 = 4,812.88/x
  3. Step 3: Cross multiply
    6,159.63x = 8,490.30 × 4,812.88
  4. Step 4: Simplify right side
    6,159.63x = 40,862,795.06
  5. Step 5: Solve for x
    x = 40,862,795.06/6,159.63
  6. Step 6: Final answer
    x = 6,633.97

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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.