Home / 8,918.39-12,306.38-4,938.50

Finding the Fourth Proportional to 8,918.39, 12,306.38 and 4,938.50

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Solution

The fourth proportional to 8,918.39, 12,306.38 and 4,938.50 is: 6,814.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.39 : 12,306.38 = 4,938.50 : x
  2. Step 2: Convert to fraction form
    8,918.39/12,306.38 = 4,938.50/x
  3. Step 3: Cross multiply
    8,918.39x = 12,306.38 × 4,938.50
  4. Step 4: Simplify right side
    8,918.39x = 60,775,091.48
  5. Step 5: Solve for x
    x = 60,775,091.48/8,918.39
  6. Step 6: Final answer
    x = 6,814.58

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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.