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Finding the Fourth Proportional to 6,897.48, 9,518.74 and 3,913.44

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Solution

The fourth proportional to 6,897.48, 9,518.74 and 3,913.44 is: 5,400.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,897.48 : 9,518.74 = 3,913.44 : x
  2. Step 2: Convert to fraction form
    6,897.48/9,518.74 = 3,913.44/x
  3. Step 3: Cross multiply
    6,897.48x = 9,518.74 × 3,913.44
  4. Step 4: Simplify right side
    6,897.48x = 37,251,017.87
  5. Step 5: Solve for x
    x = 37,251,017.87/6,897.48
  6. Step 6: Final answer
    x = 5,400.67

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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.