Home / 2,985.48-4,120.20-1,866.60

Finding the Fourth Proportional to 2,985.48, 4,120.20 and 1,866.60

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Solution

The fourth proportional to 2,985.48, 4,120.20 and 1,866.60 is: 2,576.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.48 : 4,120.20 = 1,866.60 : x
  2. Step 2: Convert to fraction form
    2,985.48/4,120.20 = 1,866.60/x
  3. Step 3: Cross multiply
    2,985.48x = 4,120.20 × 1,866.60
  4. Step 4: Simplify right side
    2,985.48x = 7,690,765.32
  5. Step 5: Solve for x
    x = 7,690,765.32/2,985.48
  6. Step 6: Final answer
    x = 2,576.06

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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.