Home / 3,717.77-5,130.53-2,145.87

Finding the Fourth Proportional to 3,717.77, 5,130.53 and 2,145.87

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Solution

The fourth proportional to 3,717.77, 5,130.53 and 2,145.87 is: 2,961.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,717.77 : 5,130.53 = 2,145.87 : x
  2. Step 2: Convert to fraction form
    3,717.77/5,130.53 = 2,145.87/x
  3. Step 3: Cross multiply
    3,717.77x = 5,130.53 × 2,145.87
  4. Step 4: Simplify right side
    3,717.77x = 11,009,430.28
  5. Step 5: Solve for x
    x = 11,009,430.28/3,717.77
  6. Step 6: Final answer
    x = 2,961.30

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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.