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Finding the Fourth Proportional to 8,681.02, 11,970.86 and 7,426.24

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Solution

The fourth proportional to 8,681.02, 11,970.86 and 7,426.24 is: 10,240.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.02 : 11,970.86 = 7,426.24 : x
  2. Step 2: Convert to fraction form
    8,681.02/11,970.86 = 7,426.24/x
  3. Step 3: Cross multiply
    8,681.02x = 11,970.86 × 7,426.24
  4. Step 4: Simplify right side
    8,681.02x = 88,898,479.37
  5. Step 5: Solve for x
    x = 88,898,479.37/8,681.02
  6. Step 6: Final answer
    x = 10,240.56

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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.