Home / 3,749.13-5,170.68-2,807.15

Finding the Fourth Proportional to 3,749.13, 5,170.68 and 2,807.15

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Solution

The fourth proportional to 3,749.13, 5,170.68 and 2,807.15 is: 3,871.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,749.13 : 5,170.68 = 2,807.15 : x
  2. Step 2: Convert to fraction form
    3,749.13/5,170.68 = 2,807.15/x
  3. Step 3: Cross multiply
    3,749.13x = 5,170.68 × 2,807.15
  4. Step 4: Simplify right side
    3,749.13x = 14,514,848.51
  5. Step 5: Solve for x
    x = 14,514,848.51/3,749.13
  6. Step 6: Final answer
    x = 3,871.52

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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.