Home / 7,812.48-11,717.88-1,968.72

Finding the Fourth Proportional to 7,812.48, 11,717.88 and 1,968.72

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Solution

The fourth proportional to 7,812.48, 11,717.88 and 1,968.72 is: 2,952.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.48 : 11,717.88 = 1,968.72 : x
  2. Step 2: Convert to fraction form
    7,812.48/11,717.88 = 1,968.72/x
  3. Step 3: Cross multiply
    7,812.48x = 11,717.88 × 1,968.72
  4. Step 4: Simplify right side
    7,812.48x = 23,069,224.71
  5. Step 5: Solve for x
    x = 23,069,224.71/7,812.48
  6. Step 6: Final answer
    x = 2,952.87

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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.