Home / 8,938.40-12,291.24-7,757.42

Finding the Fourth Proportional to 8,938.40, 12,291.24 and 7,757.42

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Solution

The fourth proportional to 8,938.40, 12,291.24 and 7,757.42 is: 10,667.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.40 : 12,291.24 = 7,757.42 : x
  2. Step 2: Convert to fraction form
    8,938.40/12,291.24 = 7,757.42/x
  3. Step 3: Cross multiply
    8,938.40x = 12,291.24 × 7,757.42
  4. Step 4: Simplify right side
    8,938.40x = 95,348,278.63
  5. Step 5: Solve for x
    x = 95,348,278.63/8,938.40
  6. Step 6: Final answer
    x = 10,667.27

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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.