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Finding the Fourth Proportional to 8,938.65, 12,307.29 and 7,591.44

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Solution

The fourth proportional to 8,938.65, 12,307.29 and 7,591.44 is: 10,452.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.65 : 12,307.29 = 7,591.44 : x
  2. Step 2: Convert to fraction form
    8,938.65/12,307.29 = 7,591.44/x
  3. Step 3: Cross multiply
    8,938.65x = 12,307.29 × 7,591.44
  4. Step 4: Simplify right side
    8,938.65x = 93,430,053.60
  5. Step 5: Solve for x
    x = 93,430,053.60/8,938.65
  6. Step 6: Final answer
    x = 10,452.37

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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.