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Finding the Fourth Proportional to 7,098.76, 10,653.12 and 2,938.84

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Solution

The fourth proportional to 7,098.76, 10,653.12 and 2,938.84 is: 4,410.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,098.76 : 10,653.12 = 2,938.84 : x
  2. Step 2: Convert to fraction form
    7,098.76/10,653.12 = 2,938.84/x
  3. Step 3: Cross multiply
    7,098.76x = 10,653.12 × 2,938.84
  4. Step 4: Simplify right side
    7,098.76x = 31,307,815.18
  5. Step 5: Solve for x
    x = 31,307,815.18/7,098.76
  6. Step 6: Final answer
    x = 4,410.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.