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Finding the Fourth Proportional to 6,878.43, 9,485.10 and 5,886.99

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Solution

The fourth proportional to 6,878.43, 9,485.10 and 5,886.99 is: 8,117.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,878.43 : 9,485.10 = 5,886.99 : x
  2. Step 2: Convert to fraction form
    6,878.43/9,485.10 = 5,886.99/x
  3. Step 3: Cross multiply
    6,878.43x = 9,485.10 × 5,886.99
  4. Step 4: Simplify right side
    6,878.43x = 55,838,688.85
  5. Step 5: Solve for x
    x = 55,838,688.85/6,878.43
  6. Step 6: Final answer
    x = 8,117.94

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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.