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Finding the Fourth Proportional to 7,873.92, 10,860.88 and 5,635.08

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Solution

The fourth proportional to 7,873.92, 10,860.88 and 5,635.08 is: 7,772.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.92 : 10,860.88 = 5,635.08 : x
  2. Step 2: Convert to fraction form
    7,873.92/10,860.88 = 5,635.08/x
  3. Step 3: Cross multiply
    7,873.92x = 10,860.88 × 5,635.08
  4. Step 4: Simplify right side
    7,873.92x = 61,201,927.67
  5. Step 5: Solve for x
    x = 61,201,927.67/7,873.92
  6. Step 6: Final answer
    x = 7,772.74

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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.