Home / 5,416.45-8,125.89-1,718.80

Finding the Fourth Proportional to 5,416.45, 8,125.89 and 1,718.80

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Solution

The fourth proportional to 5,416.45, 8,125.89 and 1,718.80 is: 2,578.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.45 : 8,125.89 = 1,718.80 : x
  2. Step 2: Convert to fraction form
    5,416.45/8,125.89 = 1,718.80/x
  3. Step 3: Cross multiply
    5,416.45x = 8,125.89 × 1,718.80
  4. Step 4: Simplify right side
    5,416.45x = 13,966,740.67
  5. Step 5: Solve for x
    x = 13,966,740.67/5,416.45
  6. Step 6: Final answer
    x = 2,578.58

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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.