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Finding the Fourth Proportional to 7,641.68, 10,545.05 and 4,283.82

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Solution

The fourth proportional to 7,641.68, 10,545.05 and 4,283.82 is: 5,911.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,641.68 : 10,545.05 = 4,283.82 : x
  2. Step 2: Convert to fraction form
    7,641.68/10,545.05 = 4,283.82/x
  3. Step 3: Cross multiply
    7,641.68x = 10,545.05 × 4,283.82
  4. Step 4: Simplify right side
    7,641.68x = 45,173,106.80
  5. Step 5: Solve for x
    x = 45,173,106.80/7,641.68
  6. Step 6: Final answer
    x = 5,911.41

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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.