Home / 3,243.90-4,477.59-1,985.34

Finding the Fourth Proportional to 3,243.90, 4,477.59 and 1,985.34

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Solution

The fourth proportional to 3,243.90, 4,477.59 and 1,985.34 is: 2,740.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.90 : 4,477.59 = 1,985.34 : x
  2. Step 2: Convert to fraction form
    3,243.90/4,477.59 = 1,985.34/x
  3. Step 3: Cross multiply
    3,243.90x = 4,477.59 × 1,985.34
  4. Step 4: Simplify right side
    3,243.90x = 8,889,538.53
  5. Step 5: Solve for x
    x = 8,889,538.53/3,243.90
  6. Step 6: Final answer
    x = 2,740.39

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Double scale
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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.