Home / 4,145.18-5,720.40-2,256.80

Finding the Fourth Proportional to 4,145.18, 5,720.40 and 2,256.80

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Solution

The fourth proportional to 4,145.18, 5,720.40 and 2,256.80 is: 3,114.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,145.18 : 5,720.40 = 2,256.80 : x
  2. Step 2: Convert to fraction form
    4,145.18/5,720.40 = 2,256.80/x
  3. Step 3: Cross multiply
    4,145.18x = 5,720.40 × 2,256.80
  4. Step 4: Simplify right side
    4,145.18x = 12,909,798.72
  5. Step 5: Solve for x
    x = 12,909,798.72/4,145.18
  6. Step 6: Final answer
    x = 3,114.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.