Home / 5,918.77-8,878.06-3,423.70

Finding the Fourth Proportional to 5,918.77, 8,878.06 and 3,423.70

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Solution

The fourth proportional to 5,918.77, 8,878.06 and 3,423.70 is: 5,135.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,918.77 : 8,878.06 = 3,423.70 : x
  2. Step 2: Convert to fraction form
    5,918.77/8,878.06 = 3,423.70/x
  3. Step 3: Cross multiply
    5,918.77x = 8,878.06 × 3,423.70
  4. Step 4: Simplify right side
    5,918.77x = 30,395,814.02
  5. Step 5: Solve for x
    x = 30,395,814.02/5,918.77
  6. Step 6: Final answer
    x = 5,135.50

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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.