Home / 3,557.31-4,908.64-1,985.47

Finding the Fourth Proportional to 3,557.31, 4,908.64 and 1,985.47

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Solution

The fourth proportional to 3,557.31, 4,908.64 and 1,985.47 is: 2,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.31 : 4,908.64 = 1,985.47 : x
  2. Step 2: Convert to fraction form
    3,557.31/4,908.64 = 1,985.47/x
  3. Step 3: Cross multiply
    3,557.31x = 4,908.64 × 1,985.47
  4. Step 4: Simplify right side
    3,557.31x = 9,745,947.53
  5. Step 5: Solve for x
    x = 9,745,947.53/3,557.31
  6. Step 6: Final answer
    x = 2,739.70

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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.