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Finding the Fourth Proportional to 8,803.60, 12,142.65 and 5,656.75

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Solution

The fourth proportional to 8,803.60, 12,142.65 and 5,656.75 is: 7,802.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,803.60 : 12,142.65 = 5,656.75 : x
  2. Step 2: Convert to fraction form
    8,803.60/12,142.65 = 5,656.75/x
  3. Step 3: Cross multiply
    8,803.60x = 12,142.65 × 5,656.75
  4. Step 4: Simplify right side
    8,803.60x = 68,687,935.39
  5. Step 5: Solve for x
    x = 68,687,935.39/8,803.60
  6. Step 6: Final answer
    x = 7,802.26

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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.