Home / 8,905.80-12,287.56-5,549.16

Finding the Fourth Proportional to 8,905.80, 12,287.56 and 5,549.16

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Solution

The fourth proportional to 8,905.80, 12,287.56 and 5,549.16 is: 7,656.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.80 : 12,287.56 = 5,549.16 : x
  2. Step 2: Convert to fraction form
    8,905.80/12,287.56 = 5,549.16/x
  3. Step 3: Cross multiply
    8,905.80x = 12,287.56 × 5,549.16
  4. Step 4: Simplify right side
    8,905.80x = 68,185,636.45
  5. Step 5: Solve for x
    x = 68,185,636.45/8,905.80
  6. Step 6: Final answer
    x = 7,656.32

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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.