Home / 3,985.02-5,977.80-1,387.26

Finding the Fourth Proportional to 3,985.02, 5,977.80 and 1,387.26

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Solution

The fourth proportional to 3,985.02, 5,977.80 and 1,387.26 is: 2,080.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.02 : 5,977.80 = 1,387.26 : x
  2. Step 2: Convert to fraction form
    3,985.02/5,977.80 = 1,387.26/x
  3. Step 3: Cross multiply
    3,985.02x = 5,977.80 × 1,387.26
  4. Step 4: Simplify right side
    3,985.02x = 8,292,762.83
  5. Step 5: Solve for x
    x = 8,292,762.83/3,985.02
  6. Step 6: Final answer
    x = 2,080.98

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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.