Home / 3,939,281.57-5,436,208.56-2,128,445.57

Finding the Fourth Proportional to 3,939,281.57, 5,436,208.56 and 2,128,445.57

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Solution

The fourth proportional to 3,939,281.57, 5,436,208.56 and 2,128,445.57 is: 2,937,254.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939,281.57 : 5,436,208.56 = 2,128,445.57 : x
  2. Step 2: Convert to fraction form
    3,939,281.57/5,436,208.56 = 2,128,445.57/x
  3. Step 3: Cross multiply
    3,939,281.57x = 5,436,208.56 × 2,128,445.57
  4. Step 4: Simplify right side
    3,939,281.57x = 11,570,673,999,947.04
  5. Step 5: Solve for x
    x = 11,570,673,999,947.04/3,939,281.57
  6. Step 6: Final answer
    x = 2,937,254.88

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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.