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Finding the Fourth Proportional to 8,642.76, 11,927.04 and 5,107.74

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Solution

The fourth proportional to 8,642.76, 11,927.04 and 5,107.74 is: 7,048.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.76 : 11,927.04 = 5,107.74 : x
  2. Step 2: Convert to fraction form
    8,642.76/11,927.04 = 5,107.74/x
  3. Step 3: Cross multiply
    8,642.76x = 11,927.04 × 5,107.74
  4. Step 4: Simplify right side
    8,642.76x = 60,920,219.29
  5. Step 5: Solve for x
    x = 60,920,219.29/8,642.76
  6. Step 6: Final answer
    x = 7,048.70

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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.