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Finding the Fourth Proportional to 8,641.96, 12,975.90 and 4,948.36

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Solution

The fourth proportional to 8,641.96, 12,975.90 and 4,948.36 is: 7,429.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.96 : 12,975.90 = 4,948.36 : x
  2. Step 2: Convert to fraction form
    8,641.96/12,975.90 = 4,948.36/x
  3. Step 3: Cross multiply
    8,641.96x = 12,975.90 × 4,948.36
  4. Step 4: Simplify right side
    8,641.96x = 64,209,424.52
  5. Step 5: Solve for x
    x = 64,209,424.52/8,641.96
  6. Step 6: Final answer
    x = 7,429.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.