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Finding the Fourth Proportional to 4,605.66, 6,894.72 and 3,990.06

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Solution

The fourth proportional to 4,605.66, 6,894.72 and 3,990.06 is: 5,973.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,605.66 : 6,894.72 = 3,990.06 : x
  2. Step 2: Convert to fraction form
    4,605.66/6,894.72 = 3,990.06/x
  3. Step 3: Cross multiply
    4,605.66x = 6,894.72 × 3,990.06
  4. Step 4: Simplify right side
    4,605.66x = 27,510,346.48
  5. Step 5: Solve for x
    x = 27,510,346.48/4,605.66
  6. Step 6: Final answer
    x = 5,973.16

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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.