Home / 8,918.45-12,307.73-4,939.48

Finding the Fourth Proportional to 8,918.45, 12,307.73 and 4,939.48

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Solution

The fourth proportional to 8,918.45, 12,307.73 and 4,939.48 is: 6,816.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.45 : 12,307.73 = 4,939.48 : x
  2. Step 2: Convert to fraction form
    8,918.45/12,307.73 = 4,939.48/x
  3. Step 3: Cross multiply
    8,918.45x = 12,307.73 × 4,939.48
  4. Step 4: Simplify right side
    8,918.45x = 60,793,730.71
  5. Step 5: Solve for x
    x = 60,793,730.71/8,918.45
  6. Step 6: Final answer
    x = 6,816.62

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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.