Home / 7,929.90-11,886.21-3,307.50

Finding the Fourth Proportional to 7,929.90, 11,886.21 and 3,307.50

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Solution

The fourth proportional to 7,929.90, 11,886.21 and 3,307.50 is: 4,957.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.90 : 11,886.21 = 3,307.50 : x
  2. Step 2: Convert to fraction form
    7,929.90/11,886.21 = 3,307.50/x
  3. Step 3: Cross multiply
    7,929.90x = 11,886.21 × 3,307.50
  4. Step 4: Simplify right side
    7,929.90x = 39,313,639.58
  5. Step 5: Solve for x
    x = 39,313,639.58/7,929.90
  6. Step 6: Final answer
    x = 4,957.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.