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Finding the Fourth Proportional to 7,898.57, 10,904.69 and 5,251.49

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Solution

The fourth proportional to 7,898.57, 10,904.69 and 5,251.49 is: 7,250.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.57 : 10,904.69 = 5,251.49 : x
  2. Step 2: Convert to fraction form
    7,898.57/10,904.69 = 5,251.49/x
  3. Step 3: Cross multiply
    7,898.57x = 10,904.69 × 5,251.49
  4. Step 4: Simplify right side
    7,898.57x = 57,265,870.49
  5. Step 5: Solve for x
    x = 57,265,870.49/7,898.57
  6. Step 6: Final answer
    x = 7,250.16

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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.