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Finding the Fourth Proportional to 7,843.48, 10,818.53 and 6,656.37

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Solution

The fourth proportional to 7,843.48, 10,818.53 and 6,656.37 is: 9,181.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,843.48 : 10,818.53 = 6,656.37 : x
  2. Step 2: Convert to fraction form
    7,843.48/10,818.53 = 6,656.37/x
  3. Step 3: Cross multiply
    7,843.48x = 10,818.53 × 6,656.37
  4. Step 4: Simplify right side
    7,843.48x = 72,012,155.18
  5. Step 5: Solve for x
    x = 72,012,155.18/7,843.48
  6. Step 6: Final answer
    x = 9,181.15

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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.