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Finding the Fourth Proportional to 8,703.58, 12,007.31 and 6,470.79

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Solution

The fourth proportional to 8,703.58, 12,007.31 and 6,470.79 is: 8,926.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703.58 : 12,007.31 = 6,470.79 : x
  2. Step 2: Convert to fraction form
    8,703.58/12,007.31 = 6,470.79/x
  3. Step 3: Cross multiply
    8,703.58x = 12,007.31 × 6,470.79
  4. Step 4: Simplify right side
    8,703.58x = 77,696,758.69
  5. Step 5: Solve for x
    x = 77,696,758.69/8,703.58
  6. Step 6: Final answer
    x = 8,926.99

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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.