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Finding the Fourth Proportional to 8,698.68, 12,001.32 and 4,921.47

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Solution

The fourth proportional to 8,698.68, 12,001.32 and 4,921.47 is: 6,790.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,698.68 : 12,001.32 = 4,921.47 : x
  2. Step 2: Convert to fraction form
    8,698.68/12,001.32 = 4,921.47/x
  3. Step 3: Cross multiply
    8,698.68x = 12,001.32 × 4,921.47
  4. Step 4: Simplify right side
    8,698.68x = 59,064,136.34
  5. Step 5: Solve for x
    x = 59,064,136.34/8,698.68
  6. Step 6: Final answer
    x = 6,790.01

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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.