Home / 3,717.51-5,130.45-2,145.66

Finding the Fourth Proportional to 3,717.51, 5,130.45 and 2,145.66

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Solution

The fourth proportional to 3,717.51, 5,130.45 and 2,145.66 is: 2,961.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,717.51 : 5,130.45 = 2,145.66 : x
  2. Step 2: Convert to fraction form
    3,717.51/5,130.45 = 2,145.66/x
  3. Step 3: Cross multiply
    3,717.51x = 5,130.45 × 2,145.66
  4. Step 4: Simplify right side
    3,717.51x = 11,008,201.35
  5. Step 5: Solve for x
    x = 11,008,201.35/3,717.51
  6. Step 6: Final answer
    x = 2,961.18

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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.