Home / 3,147.48-4,720.41-1,914.66

Finding the Fourth Proportional to 3,147.48, 4,720.41 and 1,914.66

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Solution

The fourth proportional to 3,147.48, 4,720.41 and 1,914.66 is: 2,871.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.48 : 4,720.41 = 1,914.66 : x
  2. Step 2: Convert to fraction form
    3,147.48/4,720.41 = 1,914.66/x
  3. Step 3: Cross multiply
    3,147.48x = 4,720.41 × 1,914.66
  4. Step 4: Simplify right side
    3,147.48x = 9,037,980.21
  5. Step 5: Solve for x
    x = 9,037,980.21/3,147.48
  6. Step 6: Final answer
    x = 2,871.50

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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.