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Finding the Fourth Proportional to 3,615.51, 5,423.27 and 1,887.51

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Solution

The fourth proportional to 3,615.51, 5,423.27 and 1,887.51 is: 2,831.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.51 : 5,423.27 = 1,887.51 : x
  2. Step 2: Convert to fraction form
    3,615.51/5,423.27 = 1,887.51/x
  3. Step 3: Cross multiply
    3,615.51x = 5,423.27 × 1,887.51
  4. Step 4: Simplify right side
    3,615.51x = 10,236,466.92
  5. Step 5: Solve for x
    x = 10,236,466.92/3,615.51
  6. Step 6: Final answer
    x = 2,831.27

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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.