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Finding the Fourth Proportional to 6,898.94, 9,521.45 and 5,135.57

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Solution

The fourth proportional to 6,898.94, 9,521.45 and 5,135.57 is: 7,087.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,898.94 : 9,521.45 = 5,135.57 : x
  2. Step 2: Convert to fraction form
    6,898.94/9,521.45 = 5,135.57/x
  3. Step 3: Cross multiply
    6,898.94x = 9,521.45 × 5,135.57
  4. Step 4: Simplify right side
    6,898.94x = 48,897,999.69
  5. Step 5: Solve for x
    x = 48,897,999.69/6,898.94
  6. Step 6: Final answer
    x = 7,087.76

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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.