Home / 5,435.78-8,152.40-2,659.66

Finding the Fourth Proportional to 5,435.78, 8,152.40 and 2,659.66

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Solution

The fourth proportional to 5,435.78, 8,152.40 and 2,659.66 is: 3,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,435.78 : 8,152.40 = 2,659.66 : x
  2. Step 2: Convert to fraction form
    5,435.78/8,152.40 = 2,659.66/x
  3. Step 3: Cross multiply
    5,435.78x = 8,152.40 × 2,659.66
  4. Step 4: Simplify right side
    5,435.78x = 21,682,598.45
  5. Step 5: Solve for x
    x = 21,682,598.45/5,435.78
  6. Step 6: Final answer
    x = 3,988.87

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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.