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Finding the Fourth Proportional to 6,392.48, 8,826.44 and 6,290.40

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Solution

The fourth proportional to 6,392.48, 8,826.44 and 6,290.40 is: 8,685.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,392.48 : 8,826.44 = 6,290.40 : x
  2. Step 2: Convert to fraction form
    6,392.48/8,826.44 = 6,290.40/x
  3. Step 3: Cross multiply
    6,392.48x = 8,826.44 × 6,290.40
  4. Step 4: Simplify right side
    6,392.48x = 55,521,838.18
  5. Step 5: Solve for x
    x = 55,521,838.18/6,392.48
  6. Step 6: Final answer
    x = 8,685.49

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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.