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Finding the Fourth Proportional to 6,909.61, 9,535.49 and 3,925.39

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Solution

The fourth proportional to 6,909.61, 9,535.49 and 3,925.39 is: 5,417.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,909.61 : 9,535.49 = 3,925.39 : x
  2. Step 2: Convert to fraction form
    6,909.61/9,535.49 = 3,925.39/x
  3. Step 3: Cross multiply
    6,909.61x = 9,535.49 × 3,925.39
  4. Step 4: Simplify right side
    6,909.61x = 37,430,497.46
  5. Step 5: Solve for x
    x = 37,430,497.46/6,909.61
  6. Step 6: Final answer
    x = 5,417.17

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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.