Home / 3,871,129.56-5,342,245.52-2,128,688.52

Finding the Fourth Proportional to 3,871,129.56, 5,342,245.52 and 2,128,688.52

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Solution

The fourth proportional to 3,871,129.56, 5,342,245.52 and 2,128,688.52 is: 2,937,637.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871,129.56 : 5,342,245.52 = 2,128,688.52 : x
  2. Step 2: Convert to fraction form
    3,871,129.56/5,342,245.52 = 2,128,688.52/x
  3. Step 3: Cross multiply
    3,871,129.56x = 5,342,245.52 × 2,128,688.52
  4. Step 4: Simplify right side
    3,871,129.56x = 11,371,976,709,445.43
  5. Step 5: Solve for x
    x = 11,371,976,709,445.43/3,871,129.56
  6. Step 6: Final answer
    x = 2,937,637.85

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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.