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Finding the Fourth Proportional to 7,918.13, 11,880.65 and 3,761.07

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Solution

The fourth proportional to 7,918.13, 11,880.65 and 3,761.07 is: 5,643.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.13 : 11,880.65 = 3,761.07 : x
  2. Step 2: Convert to fraction form
    7,918.13/11,880.65 = 3,761.07/x
  3. Step 3: Cross multiply
    7,918.13x = 11,880.65 × 3,761.07
  4. Step 4: Simplify right side
    7,918.13x = 44,683,967.19
  5. Step 5: Solve for x
    x = 44,683,967.19/7,918.13
  6. Step 6: Final answer
    x = 5,643.25

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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.