Home / 7,812.30-11,718.54-2,618.16

Finding the Fourth Proportional to 7,812.30, 11,718.54 and 2,618.16

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Solution

The fourth proportional to 7,812.30, 11,718.54 and 2,618.16 is: 3,927.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.30 : 11,718.54 = 2,618.16 : x
  2. Step 2: Convert to fraction form
    7,812.30/11,718.54 = 2,618.16/x
  3. Step 3: Cross multiply
    7,812.30x = 11,718.54 × 2,618.16
  4. Step 4: Simplify right side
    7,812.30x = 30,681,012.69
  5. Step 5: Solve for x
    x = 30,681,012.69/7,812.30
  6. Step 6: Final answer
    x = 3,927.27

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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.