Home / 5,417.95-8,128.46-1,908.84

Finding the Fourth Proportional to 5,417.95, 8,128.46 and 1,908.84

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Solution

The fourth proportional to 5,417.95, 8,128.46 and 1,908.84 is: 2,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.95 : 8,128.46 = 1,908.84 : x
  2. Step 2: Convert to fraction form
    5,417.95/8,128.46 = 1,908.84/x
  3. Step 3: Cross multiply
    5,417.95x = 8,128.46 × 1,908.84
  4. Step 4: Simplify right side
    5,417.95x = 15,515,944.66
  5. Step 5: Solve for x
    x = 15,515,944.66/5,417.95
  6. Step 6: Final answer
    x = 2,863.80

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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.