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Finding the Fourth Proportional to 5,655.31, 7,804.34 and 3,137.47

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Solution

The fourth proportional to 5,655.31, 7,804.34 and 3,137.47 is: 4,329.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,655.31 : 7,804.34 = 3,137.47 : x
  2. Step 2: Convert to fraction form
    5,655.31/7,804.34 = 3,137.47/x
  3. Step 3: Cross multiply
    5,655.31x = 7,804.34 × 3,137.47
  4. Step 4: Simplify right side
    5,655.31x = 24,485,870.95
  5. Step 5: Solve for x
    x = 24,485,870.95/5,655.31
  6. Step 6: Final answer
    x = 4,329.72

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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.