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Finding the Fourth Proportional to 8,792.68, 12,135 and 5,257.84

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Solution

The fourth proportional to 8,792.68, 12,135 and 5,257.84 is: 7,256.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,792.68 : 12,135 = 5,257.84 : x
  2. Step 2: Convert to fraction form
    8,792.68/12,135 = 5,257.84/x
  3. Step 3: Cross multiply
    8,792.68x = 12,135 × 5,257.84
  4. Step 4: Simplify right side
    8,792.68x = 63,803,888.40
  5. Step 5: Solve for x
    x = 63,803,888.40/8,792.68
  6. Step 6: Final answer
    x = 7,256.48

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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.