Home / 3,851.72-5,317.34-2,670.74

Finding the Fourth Proportional to 3,851.72, 5,317.34 and 2,670.74

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Solution

The fourth proportional to 3,851.72, 5,317.34 and 2,670.74 is: 3,686.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.72 : 5,317.34 = 2,670.74 : x
  2. Step 2: Convert to fraction form
    3,851.72/5,317.34 = 2,670.74/x
  3. Step 3: Cross multiply
    3,851.72x = 5,317.34 × 2,670.74
  4. Step 4: Simplify right side
    3,851.72x = 14,201,232.63
  5. Step 5: Solve for x
    x = 14,201,232.63/3,851.72
  6. Step 6: Final answer
    x = 3,686.98

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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.