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Finding the Fourth Proportional to 3,009.81, 4,515.15 and 930.00

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Solution

The fourth proportional to 3,009.81, 4,515.15 and 930.00 is: 1,395.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,009.81 : 4,515.15 = 930.00 : x
  2. Step 2: Convert to fraction form
    3,009.81/4,515.15 = 930.00/x
  3. Step 3: Cross multiply
    3,009.81x = 4,515.15 × 930.00
  4. Step 4: Simplify right side
    3,009.81x = 4,199,070.53
  5. Step 5: Solve for x
    x = 4,199,070.53/3,009.81
  6. Step 6: Final answer
    x = 1,395.13

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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.