Home / 5,620.31-8,427.88-1,670.15

Finding the Fourth Proportional to 5,620.31, 8,427.88 and 1,670.15

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Solution

The fourth proportional to 5,620.31, 8,427.88 and 1,670.15 is: 2,504.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.31 : 8,427.88 = 1,670.15 : x
  2. Step 2: Convert to fraction form
    5,620.31/8,427.88 = 1,670.15/x
  3. Step 3: Cross multiply
    5,620.31x = 8,427.88 × 1,670.15
  4. Step 4: Simplify right side
    5,620.31x = 14,075,777.47
  5. Step 5: Solve for x
    x = 14,075,777.47/5,620.31
  6. Step 6: Final answer
    x = 2,504.45

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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.