Home / 9,120.82-12,586.74-4,929.07

Finding the Fourth Proportional to 9,120.82, 12,586.74 and 4,929.07

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Solution

The fourth proportional to 9,120.82, 12,586.74 and 4,929.07 is: 6,802.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.82 : 12,586.74 = 4,929.07 : x
  2. Step 2: Convert to fraction form
    9,120.82/12,586.74 = 4,929.07/x
  3. Step 3: Cross multiply
    9,120.82x = 12,586.74 × 4,929.07
  4. Step 4: Simplify right side
    9,120.82x = 62,040,891.06
  5. Step 5: Solve for x
    x = 62,040,891.06/9,120.82
  6. Step 6: Final answer
    x = 6,802.12

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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.