Home / 2,985.15-4,119.31-1,866.03

Finding the Fourth Proportional to 2,985.15, 4,119.31 and 1,866.03

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Solution

The fourth proportional to 2,985.15, 4,119.31 and 1,866.03 is: 2,575.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.15 : 4,119.31 = 1,866.03 : x
  2. Step 2: Convert to fraction form
    2,985.15/4,119.31 = 1,866.03/x
  3. Step 3: Cross multiply
    2,985.15x = 4,119.31 × 1,866.03
  4. Step 4: Simplify right side
    2,985.15x = 7,686,756.04
  5. Step 5: Solve for x
    x = 7,686,756.04/2,985.15
  6. Step 6: Final answer
    x = 2,575.00

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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.