Home / 2,985.32-4,478.67-1,670.39

Finding the Fourth Proportional to 2,985.32, 4,478.67 and 1,670.39

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Solution

The fourth proportional to 2,985.32, 4,478.67 and 1,670.39 is: 2,505.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.32 : 4,478.67 = 1,670.39 : x
  2. Step 2: Convert to fraction form
    2,985.32/4,478.67 = 1,670.39/x
  3. Step 3: Cross multiply
    2,985.32x = 4,478.67 × 1,670.39
  4. Step 4: Simplify right side
    2,985.32x = 7,481,125.58
  5. Step 5: Solve for x
    x = 7,481,125.58/2,985.32
  6. Step 6: Final answer
    x = 2,505.97

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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.