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Finding the Fourth Proportional to 6,988.60, 9,643.86 and 3,844.60

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Solution

The fourth proportional to 6,988.60, 9,643.86 and 3,844.60 is: 5,305.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,988.60 : 9,643.86 = 3,844.60 : x
  2. Step 2: Convert to fraction form
    6,988.60/9,643.86 = 3,844.60/x
  3. Step 3: Cross multiply
    6,988.60x = 9,643.86 × 3,844.60
  4. Step 4: Simplify right side
    6,988.60x = 37,076,784.16
  5. Step 5: Solve for x
    x = 37,076,784.16/6,988.60
  6. Step 6: Final answer
    x = 5,305.32

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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.