Home / 3,386.08-5,080.20-1,438.30

Finding the Fourth Proportional to 3,386.08, 5,080.20 and 1,438.30

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Solution

The fourth proportional to 3,386.08, 5,080.20 and 1,438.30 is: 2,157.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.08 : 5,080.20 = 1,438.30 : x
  2. Step 2: Convert to fraction form
    3,386.08/5,080.20 = 1,438.30/x
  3. Step 3: Cross multiply
    3,386.08x = 5,080.20 × 1,438.30
  4. Step 4: Simplify right side
    3,386.08x = 7,306,851.66
  5. Step 5: Solve for x
    x = 7,306,851.66/3,386.08
  6. Step 6: Final answer
    x = 2,157.91

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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.