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Finding the Fourth Proportional to 6,904.83, 9,529.01 and 3,921

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Solution

The fourth proportional to 6,904.83, 9,529.01 and 3,921 is: 5,411.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,904.83 : 9,529.01 = 3,921 : x
  2. Step 2: Convert to fraction form
    6,904.83/9,529.01 = 3,921/x
  3. Step 3: Cross multiply
    6,904.83x = 9,529.01 × 3,921
  4. Step 4: Simplify right side
    6,904.83x = 37,363,248.21
  5. Step 5: Solve for x
    x = 37,363,248.21/6,904.83
  6. Step 6: Final answer
    x = 5,411.18

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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.