Home / 8,918.54-12,307.68-4,939.89

Finding the Fourth Proportional to 8,918.54, 12,307.68 and 4,939.89

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Solution

The fourth proportional to 8,918.54, 12,307.68 and 4,939.89 is: 6,817.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.54 : 12,307.68 = 4,939.89 : x
  2. Step 2: Convert to fraction form
    8,918.54/12,307.68 = 4,939.89/x
  3. Step 3: Cross multiply
    8,918.54x = 12,307.68 × 4,939.89
  4. Step 4: Simplify right side
    8,918.54x = 60,798,539.20
  5. Step 5: Solve for x
    x = 60,798,539.20/8,918.54
  6. Step 6: Final answer
    x = 6,817.10

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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.